# Find the number of times r is a root of P(x)=0. 1. P(x)=x^4+4x^3-16x-16; r=-2 2. P(x)=x^5+3x^4+2x^3-2x^2-3x-1; r=-1 3. When x^3-5x^2+4x+5 is divided by x-c, the quotient is x^2-3x-2 and the remainder is 1. Find c. Thanks

126,611 questions
1. ## Algebra 2

Find the number of times r is a root of P(x)=0. 1. P(x)=x^4+4x^3-16x-16; r=-2 2. P(x)=x^5+3x^4+2x^3-2x^2-3x-1; r=-1 3. When x^3-5x^2+4x+5 is divided by x-c, the quotient is x^2-3x-2 and the remainder is 1. Find c. Thanks

asked by Brandon on May 12, 2011
2. ## Algebra

69: 16x^2+8x-3. I inserted this into the quadratic formula and got -8+/- the square root of (8^2-4(16)(-3)/(2 times 16). This reduced to -8+/- the square root of (64+120)/32, which further reduced to -8+/-the square root of 184/32. I reduced the top part

asked by Britt on October 4, 2009
3. ## Math

i^6 = (i^2)^3 = (-1)^3 = -1 The square, not the square root of -1 is 1. :) B.t.w., can you prove that -1 times -1 is 1? Hint, try to prove first that for any number X: -1 times X equals -X How do you find the square root of -1? The square of any real

asked by Count Iblis on November 15, 2006
4. ## Pre-Algebra

How does finding the square root of a number compared to finding the cube root off a number use number 64 in your explanation. xx check my answer ;3 the square root of a number is a number which when multiplied twice by itself gives the number that was

asked by Mrs. Sue's Pet xdddd on October 15, 2015
5. ## Math

find any stationary points of the function g(x) = (2x-3)square root of 5+16x-4x^2 (0 less than or equal to x less than or equal to 4) and use the first derivative test to classify each stationary point as a local maximum or local minimum of g(x) this is

asked by Pd on September 14, 2010
6. ## Math

I can not find the solutions to the following problems using 2 methods: algebraically and geometrically. 1. X with the square root of 2 =9 2. X with the square root of 3 =27 3. X with the square root of 4 =27 --Note: Fourth root I'm not sure what you mean

asked by Doris on September 28, 2006
7. ## Algebra

There are two solutions to | 16x - 5 | = 3. The greatest solution is ___. Since the expression, 16x - 5, can be either positive or negative, solve for both. 16x - 5 = 3 16x = 8 x = .5 -(16x - 5) = 3 -16x + 5 = 3 -16x = -2 x = 1/8 You can decide which is

asked by Juri on July 23, 2007

Which sum will be irrational? (1 point) 3 + 2 start root 19 end root plus start fraction 7 over 2 end fraction Start Fraction 18 over 3 End Fraction plus Start Fraction 11 over ten thousand End Fraction. –6 + (–3.251) Which product will be rational? (1

asked by Anonymous on September 2, 2015
9. ## math help ms sue please

Which sum will be irrational? (1 point) 3 + 2 start root 19 end root plus start fraction 7 over 2 end fraction Start Fraction 18 over 3 End Fraction plus Start Fraction 11 over ten thousand End Fraction. –6 + (–3.251) Which product will be rational? (1

asked by Anonymous on September 2, 2015
10. ## help please with math thanks

Which sum will be irrational? (1 point) a.3 + 2 b.start root 19 end root plus start fraction 7 over 2 end fraction c Start Fraction 18 over 3 End Fraction plus Start Fraction 11 over ten thousand End Fraction. d. –6 + (–3.251) Which product will be

asked by Anonymous on September 2, 2015
11. ## ms sue math help please or anyone

Which sum will be irrational? (1 point) a.3 + 2 b.start root 19 end root plus start fraction 7 over 2 end fraction c Start Fraction 18 over 3 End Fraction plus Start Fraction 11 over ten thousand End Fraction. d. –6 + (–3.251) Which product will be

asked by Anonymous on September 2, 2015

Which sum will be irrational? (1 point) 3 + 2 start root 19 end root plus start fraction 7 over 2 end fraction Start Fraction 18 over 3 End Fraction plus Start Fraction 11 over ten thousand End Fraction. –6 + (–3.251) Which product will be rational? (1

asked by XenaGonzalez on August 25, 2015
13. ## Algerbra

how do you solve 7(3x+4)=8(2x+5)+13 expand the parenthesis...I will do the left side.. 21x + 29= Now, subtract sixteen x from both sides, and subtract 28 from both sides. I will be happy to check your work. 7(3x+4)=8(2x+5)+13 21x + 29 is 7 times 4 28? 21x+

asked by Tony on March 26, 2007
14. ## algebra

Solve the system by addition or substitution. 16x-4y=20 y=4x-4 I ask for help with this and forgot to add the problem. can anyone help me understand how to do this? 16x-4y=20 -4x+y=-4 ___________ 16x-4y=20 (4)(-4x+y=-4) ______________ 16x-4y=20 -16x+4y=-16

asked by struggling on May 26, 2007
15. ## Math

Just need some help... Directions: Multiply or raise to the power as indicated... Then simplify the result. Assume all variables represent positive numbers. 1. 5(square root of 6) times two-thirds(square root of 15)= 3 one-third (square root of 90)= (This

asked by Anonymous on March 25, 2008
16. ## Algebra 1 Foundation Concepts rewrite

1. Write an algebraic expression for the following word phrase: the quotient of r and 12. (1 point) A)r • 12 B)r + 12 C)r ÷ 12 F)r – 12 2. Write a word phrase for the algebraic expression 3x - 7. (1 point) A)the difference of three times a number x

asked by Kitty on September 11, 2016
17. ## math

Nakim simplified 3 times the square root of 2x plus x times the square root of 8x minus 5 times the square root of 18x and got -10x times the square root of 2x for an answer. Part 1: Using complete sentences, explain what Nakim did wrong. Part 2: Show all

asked by kidd on July 9, 2013
18. ## Algebra

Can you explain how to find the solution of 3x^2-2x+5, using the quadratic formula? I got it down to (2 +/- sq. root of -56)/6. But my book then reduces that to (2 +/- 2 times the sq. root of 14i)/6. But I think in place of the 2 and the sq. root of 14 it

asked by Leyla on November 30, 2009
19. ## Algebra 2

could you walk me thorugh these problems simplfy square root 18 - 3 times sqaure root of 50 plus 5 times the square root of 80 - 2 times the square root of 125 I'm having troubles with the square root of 80 all of the other radicals can be simplfified with

asked by Kim on May 31, 2009
20. ## math

thanks for the help but i was wondering (16 square root of x-3) times(square root of x-1) is equal to 16x-19 square root of x then plus 3 No, it is not. 16 (sqrt (x-3) ) (sqrt (x-1)) if that is your problem. It is hard to determine from your text. Use

asked by jon on January 11, 2007
21. ## math

What does it mean to have the sqaure root of 5 with a 2 in front of it? How do you figure it out? 2 sqrt 5 is two times the square root of 5. It depends where the 2 is placed wrt the square root symbol. If it is on the same line as the square root symbol,

22. ## math

1. Rosa, Roberto, Andrea, and Inno find an estimate for the square root of 10. Who has proposed the best solution? a. Rosa: "Use the sqaure root of 9 and the square root of 25 to estimate." b. Roberto: "I will use the square root of 4 and the sqaure root

asked by steve on September 25, 2012
23. ## Algebra

There are 5 quadratics below. Four of them have two distinct roots each. The other has only one distinct root; find the value of that root. 4x^2+16x-9 2x^2+80x+400 x^2-6x-9 4x^2-12x+9 -x^2+14x+49

asked by Juliet on February 7, 2015
24. ## algebra

There are 5 quadratics below. Four of them have two distinct roots each. The other has only one distinct root; find the value of that root. 4x^2 +16x - 9 2x^2 + 80x + 400 x^2 - 6x - 9 4x^2 - 12x + 9 -x^2 + 14x + 49

asked by Zane on February 11, 2016
25. ## Algebra

I am a bit confused about conjugates in algebra. I am supposed to multiply 8/(the square root of two + 4) by the square root of 2 -4. My math book then goes on to simplify this to (8 times the square root of two minus 32) divided by (2-4 times the square

asked by Shealyn on February 1, 2009
26. ## Algebra (urgent!)

I am a bit confused about conjugates in algebra. I am supposed to multiply 8/(the square root of two + 4) by the square root of 2 -4. My math book then goes on to simplify this to (8 times the square root of two minus 32) divided by (2-4 times the square

asked by Shealyn on February 1, 2009
27. ## math

the square root of 5 less than 6 times a certain number is divided by the number and the quotient is 1.Find the number

asked by Sofia on November 12, 2016
28. ## Math

5(-3x - 2) - (x - 3) = -4(4x + 5) + 13 Answer Multiply factors. -15x - 10 - x + 3 = -16x - 20 +13 Group like terms. -16x - 7 = -16x - 7 Add 16x + 7 to both sides and write the equation as follows 0 = 0

asked by Andrew on January 30, 2012
29. ## ALGEBRA

1, Factor each expression x^2 - 10x - 24 A. (x + 4)(x - 6) B. (x + 6)(x - 4) C. (x + 2)(x - 12) D. (x + 12)(x - 2) 2, x^2 - 36 = 0 A. (1 + square root of 3, 1 - square root of 3) B. (-6,6) C. No solution D. None of these 3, Factor each expression 49 x^9 -

asked by STUCK on December 11, 2007
30. ## Algebra

Simplify: 3 squared divided by the square root of 80. Multiple choices: 1. square root of 80 divided by 3 to the negative 2nd power 2. 4 over 9 times the square root of 5 3. 5 over 4 times the square root of 5 4. 9 over 20 times the square root of 5

asked by anonymous on December 3, 2007
31. ## Math

I sent this in a little while back but the file got corrupted and I have to re do it and I forgot the answer please if it is not done today I fail the year. Simplify the polynomial 16x^2 + 2 + 2x - 15x^2 - 1 + 14x A:31x^2 + 16x + 1*** B:x^2 - 12x + 1 C:x^2

asked by Random on June 6, 2016
32. ## Math

Find a number whose square root is 24 more than 5 times the number. How do I set up this problem? Thank you for any help!

asked by Dylan on October 23, 2010
33. ## algebra I

Find a number whose square root is 24 more than 5 times the number. How do I set up this problem?

asked by Dylan on October 23, 2010
34. ## Geometry

What is the radius if the area of the circle is: 4x^2(PI) My answer 4x^2(pi)=(pi)(r)(2), 16x(pi)=(pi)(r)(2), 16x/pi=5x. 5(PI) My answer 5(pi)=(pi)(r)(2), sqare root of 5 is 2.23, which rounds to 3, 3(pi)=square root of 9. What is the area of the sector if

asked by Marisa on June 15, 2010
35. ## math

if x=1+under root 2+under root 3 prove that x power 4-4 x cubed-4x squared+16x-8=0

asked by samarth on May 23, 2015
36. ## Pre-Algebra

1. 16x^2 + 2 + 2x - 15x^2 - 1 + 14x A. 31x^2 + 16x + 1 B. x^2 - 12x + 1 **** C. x^2 + 16x + 1 D. x^2 + 16x + 2 2. 2x^2 + 8 - 4x + 3x - 6x^2 + 7 A. -8x^2 - 7x + 15 B. -4x^2 - x + 15 **** C. 4x^2 + x + 15 D. 8x^2 + 7x + 15 3. 4x^2 + 8x - 11x + 6 - 5x^2 + 2

asked by Help ASAP on May 10, 2018
37. ## math

5 times the square root of 12 is the square root of what number? How do I find this answer? Thanks!

asked by Alyce on December 5, 2012
38. ## math

1) the average of four positive numbers is 15. The second number is 2 times the first number. The third number is twice the second. The last number is the last square of the first number. what is the largest number? 2) suppose that 4x^2 + 8xy +4xy^2=576.

asked by Jessica on March 23, 2018
39. ## Trig.

Can you please review this to see if I did this right? 2cos^2x+3cosx=0 sq. root of (cos^2x)+(cosx)=sq. root of (-3/2) 2cos=(sq. root of -3 times sq. root of 2)/2)) times 2/1 cos=(2 times sq. root of -3 times sq. root of two)/2))

asked by Tara on January 10, 2010
40. ## Math

1) Solve equation 3r+5 _____ + 2 = 2r to find the value of r? 2 A. 2 1/7 B. 3 2/3 C. 15 D. 10 2) which is these is a rational number. A. Sq root of 14 B. -sq root of 9 C. -sq root of 34 D. Sq root of 72

asked by Randy on December 6, 2012
41. ## Math

Can someone help me reword these two things? I don't like how I did them but I can't think of anything else. Thanks!! 1. PROMPT: What do you do to check whether a number is rational or irrational? In your explanation, use an example of an irrational and a

asked by cAt.ExE HaS sTopPeD wORkInG on September 25, 2018
42. ## Math

1. Rosa, Roberto, Andrea, and Inno find an estimate for square root 10. Who has proposed the best solution? (1 point) Rosa: "Use square root 9 and square root 25 to estimate." Roberto: "I will use square root 4 and square root 9." Andrea: "It should be

asked by anonymous on December 1, 2013
43. ## MATH

1. Rosa, Roberto, Andrea, and Inno find an estimate for square root 10. Who has proposed the best solution? (1 point) Rosa: "Use square root 9 and square root 25 to estimate." Roberto: "I will use square root 4 and square root 9." Andrea: "It should be

asked by Shalee ^~^ on October 22, 2015
44. ## algebra

1)Write the expression 9n^6+7n^3-6 in quadratic form,if possible A.9(n^3)^3+7n^3-6 B.9(n^2)^3+7(n^2)-6 C.9(n^3)^2+7(n^3)-6 D.not possible I'm thinking C on this one but im not sure 2)solve b^4+2b^2-24=0 A.-2,-square root of 6,square root of 6,2 B.-square

asked by Marissa on August 18, 2007
45. ## math gre study ques

a student starts with a positive number, x^6, and take the square root three times and the cube root once. this is equivalent to which of the following? a. x^1/4 b. x^4/3 c. x^3/4 d. x^4

asked by luckybee on January 8, 2012
46. ## Mathematics(indices)

Square root of xy^2 * fourth root of 16x^4/x^3y^2.

47. ## Algebra

I had to solve 2x^2-x-1 using the quad. formula. I got it down to (1 +/- the square root of neg. 8) divided by four. I broke the sq. of neg. 8 into the sq. root of 4 and the sq. root of -2. But my question is could it also be the sq. root of -4 and the sq.

asked by Corinna on October 10, 2009
48. ## Math

Hi i was wondering what the square root of 3 times the squareroot of 9 is with little 3's on on the outside of the square roots for each of them ( the index) sqrt3 *(sqrt9)= 3sqrt3 Is that little 3 a cube root sign? If so, then a number to the 1/3 power is

asked by Tammy on January 7, 2007
49. ## calc

find the derivative of y = sqrt(9 - 16x) Use the chain rule. First find the derivative of the sqrt, and multiply that by the derivative of what is contained inside. Cake. Use the chain rule. If we have y(x)=sqrt(9-16x) then y'=d/dx(sqrt(9-16x))*d/dx(9-16x)

asked by joe on September 27, 2006
50. ## Pre-Calculus

Help please If f(x)=8x and g(x)=2x+1 find (fog)(x) 16x^2+8x 16x+1 16x+8 10x+1

asked by Anonymous on September 26, 2014

Find the HCF and LCM of: 1 + 4x + 4x^2 - 16x^4.. ,1 + 2x - 8x^3 - 16x^4.., 16x^4 + 4x^2 + 1

52. ## math

Find the HCF and LCM of: 1 + 4x + 4x^2 - 16x^4.. ,1 + 2x - 8x^3 - 16x^4.., 16x^4 + 4x^2 + 1

asked by clive on April 30, 2015
53. ## math

Find the HCF and LCM of: 1 + 4x + 4x^2 - 16x^4.. ,1 + 2x - 8x^3 - 16x^4.., 16x^4 + 4x^2 + 1

54. ## Math Help

the square root of 3 times the square root of 15 also the square root of 18 times the square root of 3 To multiply square roots: sq rt of z times the sq rt of y It would be the square root of zy The first one is 3x15 = 45 So it's the square root of 45.

asked by Tina on May 18, 2007
55. ## Trig.

2sin^2x-3sinx=-1 sin^2x-3sinx=-1/2 times -3 sq. root of (sin^2x)+sinx= sq. root of 3/sq. root of 2 sinx+sinx=(sq. root of 3 times sq. root of 2)/2 2sinx=(sq. root of 3 times sq. root of 2)/2)) times 1/2 (sq. root of 3 times sq. root of 2)/sq. root of

asked by Tara on January 10, 2010
56. ## Algebra

I need help on these kinds of radical problems. Once I get the examples solved, I think I can do others. 1. What is the solution to the square root of -9? No solution, yes or no? 2. The square root of: 6x/3x? The answer is 2? 3. The square root of -0.01?

asked by Taurus on September 8, 2012
57. ## Math

1. 16x^2 + 2 + 2x - 15x^2 - 1 + 14x a. 31x^2 + 16x + 1 b. x^2 - 12x + 1 c. x^2 + 16x + 1* d. x^2 + 16x + 2 2. 3x^2 + 6 - 2x + 5x - 4^2 + 9 a. -x^2 + 3x + 15* b. 7x^2 + 3x + 3 c. x^2 - 3x + 15 d. -x^2 + 7x + 15 3. 2x^2 + 6x - 7x + 8 -3x^2 + 1 a. 2x^2 + x +

asked by Mynameisntyourbuisness on June 2, 2017

Ms. Sue, sorry to keep bugging you with questions, but can you please check my answers? Sorry, I just want to get my answers correct when i turn it in thanks! 8. Four students work to find an estimate for square root 37. Who is closest to finding the true

asked by Delilah on October 24, 2012
59. ## Pre Algebra

Please help me with some problems. Thank you! Solve the equation by square root property. 3. 2x^2 = 26 I don't understand how to solve this problem. Solve the equation using the quadratic formula. 7. 7x^2=-8x -2 This is what I got x= -8 -or+ square root

asked by Nikki on August 18, 2007
60. ## Algebra

What is the perimeter of a computer graphic with sides measuring: 2 times the square root of 50, 3 times the square of 72, 6 times the square root of 98, and 3 times the square root of 12 centimeters?

asked by Taurus on April 22, 2012
61. ## calculus

i need to find the derivative using chain rule: (x^2 + 2x - 6)^2 (1-x^3)^2 i got the answer from a site but the problem is i cannot get my work to match up with the answer, i don't know what im doing wrong. answer: 10x^9 + 36x^8 − 64x^7 − 182x^6 +

asked by eric on January 13, 2014
62. ## Algebra

I am supposed to "write each expression with a rational denominator" 1/thesqrootof 3. I follow the book's explanation, until it suggests dividing the sq. root of 3 by the square root of 3 times the square root of three. I do not understand how that reduces

asked by Juliette on December 10, 2008

2. Shelly sews a blanket that has an area of 170 square feet. It has 30 square blocks, each the same size. What is the approximate length of each side of a block? (1 point) 1 foot 2 feet 3 feet 4 feet 3. Which of these numbers can be classified as

asked by Delilah on October 24, 2012
64. ## Math Help ASAP!!!

1. a standard number cube is rolled 180 times. Predict how many times a 3 or 5 will be the result. 31 times 60 times*** 57 times 30 times 2. A number cube is rolled 360 times, and the results are recorded as follows: 61 ones, 26 twos, 36 threes, 76 fours,

asked by Haley on May 11, 2017
65. ## 9th

Define a variable and write an expression for the phrase. the quotient of 6 times a number and 16 a.(16x) / 6 b.(6x) / 16 c.96x d.x / 96

asked by Den on September 9, 2010
66. ## Algebra Sq Rt

I have a sq rt sign with a 3 on the left side. That means I'm looking for the cube of the number inside the square root? That number is 189xto the 8th power. So I multiply 189x 8 times before I find the cube or do I find the cube of 189?

asked by Micah on February 2, 2008

root 3 ^1/4 times root 3 ^ 1/5 the answer is root three ^9/20 i cant seem to figure out why i would have just tought that it would be root three ^ 1/9 when you are multiplying exponents add. What is 1/4 + 1/5 ?

asked by sonia on July 15, 2007
68. ## Algebra

Rationalize each expression by building perfect nth root factors for each denominator. Assume all variables represent positive quantities. I don’t understand how to compute these. Also I don’t have the square root sign so I typed it out where it would

asked by Becca on January 18, 2013
69. ## Calculus

A rectangle is bounded by the x axis and the semicircle = square root 25-x^2. What length and width should the rectangle have so that its area is a maximum? When I worked the problem out(which is a bit detailed). I started with y = square root 25-x^2 then

asked by LittlePanda on June 6, 2015
70. ## Algebra

How do you find the domain of a function when the number is outside of the paranthesese. Example would be y=(square root of x)+3. I know that to find the domain when the number is under the square root, you have to make the number greater than or equal to

asked by Casey on March 31, 2008
71. ## ALGEBRA

How do you find the domain of a function when the number is outside of the paranthesese. Example would be y=(square root of x)+3. I know that to find the domain when the number is under the square root, you have to make the number greater than or equal to

asked by Casey on March 31, 2008
72. ## Math

i see were u got that from but this 1 is confusing. 6 (index 3) square root of 36 times 2 (index 3)square root of 6 Please use the following for roots: sqrt cubroot etc. Those, with parenthesis, make the problem clear. 6 cube root of 36 times 2 cube root

asked by Tammy on January 7, 2007
73. ## math

1. The formula v= (square root) 64h can be used to find the velocity, v, in feet. Round to the nearest tenth. a. 6.9ft/s b. 69.2ft/s c. 69.4ft/s** d. 69.3ft/s 2. How does finding the square root of a number compare to finding the cube root of a number?

asked by kayla ( plz help) on October 6, 2015
74. ## Pre Calculus

Find the roots of the function g(x)=x^3 +16x a)0,4i, -4i b)0,-4,-4i c)0,4,4i d)0,4,-4 The equation can be rewritten x(x^2 + 16) = 0 The function is zero if x = 0, OR if x^2 = -16 That should give you a hint of what the roots are. So you take the square

asked by raven 31791 on March 8, 2007
75. ## Algebra

Hello Reiny, please check these problems for me and if they are not right WOULD YOU PLEASE HELP ME WITH THE CORRECT ONES THANKS!!! 1. Slove for X, wher X is the real number, square root 5x + 9= square root 9x + 13= 27 2. Find the value: ^3 square root -27=

asked by lee on October 31, 2010
76. ## algebra

could someone please check these roblems for me and if they are not rightWOULD YOU PLEASE HELP E WITH THE CORRECT ONES THANKS!!! 1. Slove for X, wher X is the real number, square root 5x + 9= square root 9x + 13= 27 2. Find the value: ^3 square root -27= 9

asked by lee on October 31, 2010
77. ## Math Help!!!

1. Which of these numbers can be classified as both real and rational? ½ -1.016879413894 Square root of 5 0.89089908999 2. Which is both a real number and an integer? Square root of 7 0.15 -15 1/3 3. Which is an example of an irrational number? Square

asked by math help asap on November 12, 2014

The marginal cost of a product is modeled by dC/dx= 16/cube root 16x + 3 where x is the number of units. When x = 17, C = 120. (a) Find the cost function. (Round your constant term to two decimal places.) c= (b) Find the cost of producing 90 units. (Round

asked by abc on May 28, 2013
79. ## math calculus

The marginal cost of a product is modeled by dC/dx= 16/cube root 16x + 3 where x is the number of units. When x = 17, C = 120. (a) Find the cost function. (Round your constant term to two decimal places.) c= (b) Find the cost of producing 90 units. (Round

asked by steven on May 28, 2013
80. ## Math

1. Estimate The Value Of (Square Root 52) to the nearest whole number A. 9 B. 8 C. 7~~~ D. 6 2. Identify all the sets to which the number 3.1214122144 Belongs A. Rational B. Irrational~~~ C. integer, Rational D. Whole Number, integer, rational 3. Which Of

asked by John Cena on February 27, 2017
81. ## Math

What is the square root of 12? 3.464 Well, that's true, but you could simplify it in radicals. The square root of 12 is the same as saying the square root of 3 times the square root of 4. The square root of 4 is plus or minus 2, so you could say (I wish I

asked by Mary on March 21, 2007
82. ## Maths

Out of group of goats,Two times the square root of the number of goats were kept in shade, 1/4 of the number were taken for grazing and 15 were sold, find the initial no. Of goats?

asked by A GOODSTUDENT on August 22, 2016
83. ## math

The question is (2x+1)^2-2(2x^2-1) in simplest form Is this correct? [(2x+1)(2x+1)](-4x^2+2) 4x^2+2x+2x+1(-4x^2+2) 4x^2+4x+1(-4x^2+2) -16x^4-16x^3-4x^2 + 8x^2+8x+2 _________________________ -16^4-16x^3+4x^2+8x +2 Did I do this correctly? Thank you for your

asked by B8 on September 27, 2013
84. ## Algebra

Let x, y, and z be positive numbers. What is the fourth root of the expression: 16x^8 * y^4 * z^16 What is a "fourth root"? Thank you! :-)

asked by Cassie on March 18, 2009
85. ## algebra 2

im studying radicals and im having trouble....i need help on this one....i really don't know how to write but here it goes... the nth root is 4square root of 5 times the nth root is 4 square root of 5...i need to simplify the expression

asked by jimmy on March 11, 2008
86. ## math

1) Which of these is a rational number? a. Pi b. Square root 3 ****** c. Square root 2 d. 1.3 (the # 3 has a line at the top) 2) Which of the following sets contains 3 irrational numbers? a. Square root 120 , n , Square root 3 ****** b. - Square root 256 ,

asked by jai on April 29, 2016
87. ## Math ~CHECK MY ANSWER~

1) Which of these is a rational number? a. Pi b. Square root 3 ****** c. Square root 2 d. 1.3 (the # 3 has a line at the top) 2) Which of the following sets contains 3 irrational numbers? a. Square root 120 , n , Square root 3 ****** b. - Square root 256 ,

asked by Wendy on February 10, 2014
88. ## algebra

1.)correct 2.)wrong---> the first term is wrong 4(3a^2)^2 = 36a^4 3.) not sure on this one 4.) wrong---> - square root of six is not a solution Hope this Helps! 1)find p(-3)if p(x)=4x^3-5x^2+7x-10 =-184 2)If r(x)=4x^2-3x+7,find r(3a^2) =12a^4-9a^2+7

asked by manny on August 16, 2007
89. ## MS. SUE - MATH HELP PLEASE

The sum of five times a number and twice a second number is 18, but the difference of three times the first number and seven times the second number is -22. Find the two numbers using the elimination method.

asked by Katalina on January 16, 2014
90. ## Pre- Algebra

State if each number is Rational,Irrational,or not a real number? 1.)square root of 9/16 2.) square root of -9 3.)square root of -16 divided by -4 4.)square root of -8(-2) 5.)square root of 25 divided by 8 6.)square root of -1/4 Please Help! I have been

asked by Kay on December 9, 2015
91. ## math

which of these numbers can be classified as both rational and real? a. 1/2 b. -1.016879413894 c. square root of 5 d. 0.89089908999 which is both a real number and an integer? a. square root of 7 b. 0.15 c. -15 d. 1/3 what is an example of an irrational

asked by lol on September 27, 2017
92. ## MATH

Which expression is a polynomial???? A: 11 0ver the square root of x B: square root of 11 times x C: x - square root 11 D: 11 over the square root of x to the 2nd power (sorry I am not sure how to insert square root symbols or fractions, so u have to

asked by Amber on April 6, 2014
93. ## math

Find the points where these conics intercept: 16x^2 - 5y^2 = 64 16x^2 + 25y^2 - 96x = 256

asked by Billy on March 8, 2012
94. ## Math(radicals or square roots)

i need a explanation for this equation: 5 radical(square root) 108 over 25 the 5 is in front of the square rooted number and it is a fraction PlEASE HELP :( That is not an equation. It is a number. It sounds like you are describing the fifth root of 108,

asked by gr8 on January 10, 2007
95. ## Calculus-derivatives

What is the slope of the tangent of each curve at given point y=√(16x^3), (4,32) If I find the derivative of y=√(16x^3) Will it be 16/-x^3

asked by Jake on February 15, 2012
96. ## algebra 2

Find the points where these quadratic relations intersect. 16x^2-5y^2=64, 16x^2+25y^2-96x=256

asked by Taleigh Glass on April 2, 2014
97. ## algebra

Replace the equation in which the variable of the expression appears only once with a positive positive number for its exponent. (16x^2)/(16x^5)

asked by Kaitlyn on September 28, 2015
98. ## Calc, Implicit Differentiation

Regard y as independent variable and x as dependant variable and find the slope of the tangent line to the curve (4x^2 + 2y2)^2 - x^2y = 4588 at point (3,4). Correct answer is -0.668827160493827 Here's what I did: 2(8x(dy/dx) + 4y) -2x(dx/dy)y + x^2 = 0

asked by Michael on October 21, 2006
99. ## prime numbers

Which of these is a prime number? 407, 409, 411, or 413 409 how did you get that? Suppose you are given some number N. If x

asked by kim on April 18, 2007
100. ## Math ~CHECK MY ANSWERS~

1) Which of these is a rational number? a. Pi b. square root 3 ****** c. square root 2 d. 1.3 (the # 3 has a line at the top) 2) Which of the following sets contains 3 irrational numbers? A. square root 120, n, square root 3 ****** b. - square root 256,

asked by Jenny on February 12, 2014