2xsquared-11x-21= ? a=2 b=11 c=21 product= a*c p=42>21 and 2 2xsquared-21x-2x-21 x(2x-21)-2x-21 this can't be the answer. am i missing a step? please help, thanks

8,582 results
  1. 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 -

  2. Pre Calculus

    What is the standard equation of a hyperbola given the vertices (7,-2) , (5,-2) and asymptotes " y= 11x - 68 " & " y= 11x + 64 "?

  3. Algebra

    find all zeros, write polynomial as product of linear factors 1) f(x)=9x^3 - x^2 +9x -9 2) f(x)=x^4 -21x^2 -100 3) f(x)=x^3 -3x^2 -5x +39

  4. MATH HELP PLEASE

    1.-3f^2+4f-3+8f^2+7f+1 a.5f^2-11f+2 b.11f^2+11f+2*** c.5f^2+11f-2 d.-5f+3f-2 2.3x^2+5X-5X^2-4X-2 a.-8x^2-9x+3 b.2x^2+x+3 c.-2x^2-9x+3 d.-2x^2+x+3*** 3.(8x-2y)+(3x-4y) a.11x+8y*** b.4x-y c.11x-6y d.5x+2y 4.(y+3d)-(-9y+7d) a.-10y+4d b.-8y+10d c.8y-6d***

  5. math

    find the sum and product of the roots of the equation 5x^2+11x-3=0 ?

  6. algebra

    find a third degree polynomial equation with coefficients that has roots -4 and 6+i possible answers x^3-8x^2-11x+148=0 x^3-8x^2-12x+37=0 x^3-12x^2+37x=0 x^3-8x^2-11x=0

  7. maths

    the sum of N positive integers is 19. what is the maximum possible product of these N numbers? thx. Nice problem. Let's look at some cases 1. N=2 clearly our only logical choices are 9,10 for a product of 90 It should be obvious that the numbers should be

  8. Mathematics

    write the following simultaneous equations in the form of AX= B where A,X and B are matrices 11x+6y=6 9x+5y=7 hence write the solution for x and y as a product of two matrices.

  9. math

    given that 2xsquared-5x+k is a perfect square . find the value of k

  10. Algebra

    Write the equation in slope-intercept form. What are the slop and y-intercept? -10x + 11y = -6 A. y = 10/11x-6/11 Slope: 6/11;y-intercept: -10/11 B. y = 10/11x-6/11 Slope:10/11;y-intercept: -6/11 C. y = 10/11x+6/11 Slope: 10/11;y-intercept: 6/11 D. y =

  11. Math

    Simplify: 2xsquared minus 4xsquared

  12. Algebra 1b!

    1. Find the excluded value of x for the polynomomial expression 4x/6 a. 6 b. -6 c. 1/6 d. -1/6 2. Simplifly 3-2x/7 + 4x+5/7 a. 2x+8/14 b. 2x+8/7

  13. Math

    Simplify 3(x - 4) + 8(x + 2). A)11x - 4 B)11x + 4 C)11x - 2

  14. Algebra

    i have to take the standard form of the Equation 11x - 4y = 32 and change it to slope- Intercept form y = my + b Answer 4y = 11x - 32

  15. calculus

    Sketch the region enclosed by the given curves. Decide whether to integrate with respect to x or y. Draw a typical approximating rectangle and label its height and width. y=tan(11x) and y= sin(11x). -pi/33>= x

  16. algebra

    2xsquared-11x-21= ? a=2 b=11 c=21 product= a*c p=42>21 and 2 2xsquared-21x-2x-21 x(2x-21)-2x-21 this can't be the answer. am i missing a step? please help, thanks

  17. maths

    expand and simplify:(5x-3)(2xsquared+3x-3)

  18. maths

    expand and simplify:2(x+2)squared-(2x-1)(x+2) 2x(x-2)+5x(x÷3)-x(3x-1) (5x-3)(2xsquared+3x-3) solve for x:(x-2)squared+3x-2=(x+3)squared

  19. Pre Cal

    find the domains of the following functions: a) f(x)=x^20 b) g(x)=1/(x-3) c) h(x)=1/(4x^2=21x-18) d) k(x)=sqrt (4x^2-21x-18) e) p(x)=1/sqrt(4x^2-21x-18)

  20. math

    *simplify by combining like terms, if possible. then, remove the GCF and factor fully. 2x^2-21x+36+x^2 =3x^2-21x+36 ...i'm not sure what to do after that, could you help and show the steps please

  21. Pre Cal/ domain

    Domain of a) x^20 b) 1/(x-3) c)1/(4x^2-21x-18) d) sqrt(4x^2-21x-18) e) 1/ sqrt(4x^2-21x-18)

  22. math

    solve the system of equations for x and y { x^2 - 11x -y =-24 x^2 - 11x + y = -24

  23. Algebra

    $6300 is​ invested, part of it at 11​% and part of it at 8​%. For a certain​ year, the total yield is ​$nbsp 597.00 . How much was invested at each​ rate? x+y=6300(-11) 0.11x+ 0.08y=597(100) ............................ 11x+8y=59700

  24. Algebra

    Add the following (-8^2-2x+4)+(x^2-9x+7) A)9x^2-7x+11 B)-8x^2+11x+11 C)-7^2-11x+11 D)-7x^4-11x^2+11

  25. algebra

    You’ve decided to start your own business and sell handmade toys. You found an online supplier, Company A, where you pay $11 for each of the toys plus $10 shipping. You will sell the toys for $13 each. Since you are just starting out, you can’t spend

  26. algebra

    You’ve decided to start your own business and sell handmade toys. You found an online supplier, Company A, where you pay $11 for each of the toys plus $10 shipping. You will sell the toys for $13 each. Since you are just starting out, you can’t spend

  27. algebra

    Can anyone tell me if I got this problem right 12x-6=11x 12x-6+6=11x+6 12x-11x=6 1x=6 x=6/1 x=6 Yes, that is correct

  28. Algebra

    I need to make sure this is correct. 5/2x+1/4x=11/4+x 4(5/2x+1/4x=11/4+x) cancel, left with 10x+1x=11+x 11x=11+x 11x-x=11 10x=11 x=11/10

  29. Mathematics

    write the following simultaneous equations in the form of AX= B where A,X and B are matrices 11x+6y=6 9x+5y=7 hence write the solution for x and y as a product of two matrices.

  30. Equation

    Can anyone check this answer for me, simultaneous equation. Where y = 14 + 0.11x and y = 10 + 0.14x use algebra to solve, is the answer 14 + 0.11x = 10 + 0.14x y = 4 x = 0.03 If not where am I going wrong Thanks... :-)

  31. ALGEBRA 1

    I need to simplify a rational expression. 2xsquared+11x-6/x+6

  32. algebra 2

    SImplify the expressions. 1. x to the seventh times 1/x squared 2. (3 quaredx to the sixth)cubed 3. x to the nith/ x negitive squared 4. 15xsquaredy/ 6x to the fourthy to the fifth times 6xcubed y squared/5xy USE direct substitution to evaluate the

  33. ALGEBRA(sorry I forgot this one)

    4. -2xsquared+3x-7 when x=4

  34. algebra

    (2xsquared -1)+(3x-4)+(xsqaured-3x+3

  35. Algebra 1

    f(x)=xcubed - 2xsquared + 4x-7, what is f(0)

  36. math

    2xsquared y (3xysquared-2y)-3xysquared(2xsquared y -5x) how do you do this

  37. Geometry

    How to foil 2xsquared - x - 15=0

  38. maths

    xsquared÷2+2xsquared÷3-7xsquared÷6

  39. Algebra 1

    what are the zeros of the function? f(x)=2xsquared + 7x +3

  40. math

    (3xsquared-7x-6)+(2xsquared-4x+1) simplify

  41. Math

    I have a table with x and y. x = 0, 1, 2, and 3. y=2xsquared. My answers are 0 = 0, 1 = 4, 2 = 16, and 3 = 36. Am I right? Thanks.

  42. Algebra 2

    indicate whether the function is quadratic. (-5x-4)(-5x-4) then 2(x+2)squared-2xsquared

  43. College Math

    True or false conclude the functions of F(x) + 2xsquared - 2x +7

  44. math

    simplify 2xcubed+3x+5 divided by x+1. i am finding 2x squared-3x-5 and the book says 2xsquared-2x+5.please help am stuck

  45. algebra (parabolas)

    find the axis of symmetry and vertex of the function. tell whether it goes upward or downward. 1. y=-xsquared+9 2. y=-2xsquared=7x-21

  46. Algebra 1

    given the scatterplot below,which of the following equations would best model the date?explain your choice.(1)y=-3x+6 (2)y=6(2)x (3)y=-4xsquared+20x+3 (4)y=2xsquared-6x+4

  47. Algebra 1

    (3xsquared-8x+1)(-2xsquared+-2) (i wrotee squared because i don't know how to type an exponent) Please help me to understand the steps of this problem! I'm not sure if I add the exponents or multiply them...

  48. Math

    Given that alpha and bitter are the roots of 2xsquared minus 6x minus 1 equal to 0. Find the value of 2alpha bittersquare plus 2alphasquaredbitter plus 2alphabitter.

  49. Algebra

    Factor 2xsquared minus 5x minus 3.

  50. math

    1. 2xsquared-7x=-6 2. xsquared + 12x + 1= 0 3. xsquared + 6x + 20 = 0

  51. math check my answers

    1. 2(x+3)squared-6x+5=0 Answer= 2xsquared+6x+23=0 2. 3xsquared-6x+5=-2(x+1)-10 Answer= 3xsquared-4x+17=0 How would I solve from this point?

  52. Algebra

    Solve for "x" in each equation. 1)xsquared+12x+25= 0 2)xsquared+4x-12= 0 3)xsquared-5x= 50 4)(x+1)squared= 169 5)2xsquared+5x= 12 6)(2x-5)squared= 225 7)x-4/x-3 = x+2/x+1 8)9/2x+1/3= 1/2 9)6/x-1= 3/x 10)2x/2x+2x= 4

  53. 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+

  54. algebra

    Find integer bounds for the roots of the following equation: 3x^5-11x^4-2x^3=38x^2-21x-15

  55. Mathematics

    The formula N = 2Xsquared + 22X + 320 represents the number of inmates, N, in thousands, in U.S. state and federal prisons x years after 1980. According to the formula, in what year were there 740 thousand inmates in the U.S. state and federal prisons?

  56. need help

    Factor Completely (x-4(x^2+3) Perform the indicated operations (-(7x^3+6x^2-11x+13) +(19x^3-11x^2+7-17 Find The Product (2x-1)- (-x^2-4x+3)

  57. inequality expresion

    The cost of a long distant telephone call is $0.36 for first minutes and $0.21 each additional minutes or portion thereof. Write an inequality representing the number of minutes a person could talk with out exceeding $3.00 would this be written as

  58. math117/algebra

    The price of an item is given by p=2xsquared - 100. Find the polymonial that represents the revenue generated from the sale of x items. Multiply the price term, 2x^2 - 100, by the number of sales, x. That should be the revenue from selling x units. The

  59. algerbra

    7(3x+4)=8(2x+5)+13 how would I start a equation like this would it be 21x+28=16x+40+13 ? Yes, that is the way to start. Now collect the x's on one side. so it would be 21x-21x=28= 28=-5+40+13 28+13=41 x=41 7(3x+4)=8(2x+5)+13 21x+28=16x+40+13 To get all the

  60. math

    I solved this problem 12x-6=11x -6+6=0 11x+6 12x=11x+6 12x-11x=x 11x-11x=0 x=6 Can someone show me the process of checking it?

  61. algebra

    How do you factor numbers? 2x squared + 5x-3 for instance? 2x^2 + 5x -3 Make two sets of parentheses. ( ) ( ) The first number in each set must be such that the product will be 2x^2. Obviously, that must be 2xand 1x so put them in. (2x )(x ) The next thing

  62. MATH

    This problem makes no sence to me i tried it but i know i am completely wrong someone please help. The cost for a long-distance telephone call is $0.36 for the first minute and $0.21 for each additional minute or portion thereof. Write an inequality

  63. algebra

    find the product of (x^2-3x+5)with the quotient of (21x^6- 14x^5-7x^3)divide by 7x^3

  64. Math

    Simplify I came up with 5.5 (15x^5-21x^4+21x^2)/(3x^2 ) not sure if I did this the correct way it just doesn't seem right at all.

  65. Math

    Can somebody please explain to me how to factor trinomials that contain two unknown variables and are complex sum & product?? Examples: 2x^2 + 13xy + 15y^2 11x^2 + 14xy + 3y^2 I understand how to factor trinomials that only have x as the variable, but

  66. Math

    Can anyone help work these problumns out step by step? 11x-37=x+23 10p-26=p-44 -13x+5=4x-6 -7x+13=4x-7 11x+5=17 -11x+13=-42 -15y+26=-19 5x-13=9x+15 6q-14=11q-19 4(-2x-5)=29 12(2-5x)=(3x-1) 9x+2=15x-10 19q+4=7q-3 6(2x+1)=9(2x+6) -7(x-3)=8(4-5x)

  67. algebra 2

    I am trying to factor the expression -8y^2+28y-60 but can't get an answer that is correct. Here is an example of how the problem is supposed to be factored. If you have 21x2-77x-28 the first thing you would do is (21x )(x ). Next you would find two numbers

  68. alg 2

    what is the product of the rational zeros of the following function?\ f(x) =x^3 -2x^2-11x+12

  69. Calculus

    I've done everything I can think of to solve this, but I have no idea. Find the derivative: y = sq rt{11x + sqrt[11x + sqrt(11x)]}

  70. Math

    Differentiate and simplify (11x)(sqrt10x-5) I think you use the Product rule but square roots confuse me with it being 1/2

  71. Math

    Okay, this isn't really a big question. I know how to do it, there's just one thing I have to make sure of. The problem is: 5x+4y-11x-2y I know I need to combine like terms, but which sign do I use to do that. Like if I want to combine 5x and 11x, do I use

  72. ALGEBRA -- long division

    Find each solution using long division. Show your work. Show that x + 1 is NOT a factor of... 2x^3 + x^2 - 11x - 30. Show that x - 3 IS a factor of 2x^3 - 11x^2 - 11x^2 + 12x + 9.

  73. math

    7/x+5/3x=2/x-5 so lcm=3x(x-5) 21(x-5)+5(x-5)=5x 21x-105+5x-25=5x 26x-130=5x -26x to both sides -130=-21x divide each side by -21 -130/-21 x=6.19 is this correct thanks for checking my work.

  74. math

    please help me out here the problem is combining like terms. 4x^3-3x^3+9x+2x I got 1x^3+11x but when i asked a friend they said it would be x^3+11x could u help me out please. also could you tell me if this probem is correct as well (10x^3+6x^2+4x)

  75. math

    what is the equation of a line that passes through (1,-4) and (2,7)? a. y=x+5 b. y=x-5 c. y=11x+8 d. y=11x-5 plz help and exlain how to do it....thanks

  76. Maths

    How do I find non-decimal solutions for the two following cubic equations ? x^3-11x^2-4x-44=0 x^3+11x^2-4x+44=0

  77. algebra

    factor the following equation: 6x^2 - 21x - 9 i've tried to factor it and can only get answers for 6x^2 - 21x + 9!

  78. math

    4x^2+11x-69=0 Find the solution to use a comma to separate the answers as needed. X^2+11x What is the constant term?(Integer or simplified fraction) 1/6 gt y= (rationalize all Denominators)

  79. Algebra

    45 ÷ 6t x 11x I have already posted this question and received an answer. However, brackets weren't used and so still seeking understanding. I was trying to divide 6 into 45 then multiply 11x, but it isn't working out as the book answers. Once again,

  80. Algebra

    3x-27/55÷x-9/15x my answer is =3(11x^2-4)/11x is this correct

  81. Algebra 1

    3x-27/55÷x-9/15x my answer is =3(11x^2-4)/11x is this correct.

  82. Algebra

    3x-27/55÷x-9/15x my answer is =3(11x^2-4)/11x is this correct.

  83. Pre-Calculus

    Find dy/dx if y= x^6[(x^2-9)^8]? So the answer is supposed to be 2x^5[(x^2-9)^7](11x^2-27), but I don't understand how to get it. Do you use product rule, chain rule or both? thanks

  84. Math

    Solving ya Systems of Equations by elimination -14x+15y=3 21x-20y=-10 The LCM is 42 so I am able to get (-14x +15y=15)3 = -42x+45=45 (21x-20y=-10)2 = 42x-40y=-20 y =7 but when I plug it in to try and figure out x I do not get a whole number, can you help?

  85. math

    Find the product.11X(-3)X(-5) equals. 1) -165 2)-28 3) 28 4) 165 I think 4 Thanks

  86. math

    The equation that has the roots 1, 2, 3 is: (a) x3 + 6x2 – 11x + 6 (b) x3 – 6x2 + 11x – 6 * (c) x3 + 6x2 + 11x + 6 (d) x3 – 6x2 – 11x – 6 how ?

  87. algebra

    Problem Two: 5/9 + (2/9)x = 25/7 + (6/7)x – 2/3 Multiply figures inside parentheses 5/9 + (1 x 2/9x) = 25/7 + (1 x 6/7x) – 2/3 Collect like signs 5/9 + 2/9(6/7x) = 25/7 + (-2/3) Multiply like signs 2 x 6 9 7 Reduce like numbers 2 x 2 = 4x 3 7 21x

  88. math

    simplify and state any restrictions: 1. x+3/x^2+11x+24 - 2x+10/x^2+11x+30 answer: -x-10/(x+8)(x+6) 2. x-4/x^2-8x+16 + 3x+21/x^2+12x+35 answer: 4x-7/(x-4)(x+5) i don't uderstand how to do it. can you please show me the steps. thanks

  89. MATH - Algebra

    11x^2 + 22x/11 Am I on the right track? 11(x^2 + 11x)/11 = x^2 + X

  90. math polynomials

    Simplify 4q^2-5q-1+8q^2+8q-9 A. -4q^2+3q+8 B. 12q^2+3q-10 C. -12q^2-13q-10 D. -4q^2-13q+8 I'm pretty sure its B. 12q^2+3q-10 Add (4x-2y) + (7x-5y) A. 11x+3y B. 11x-7y C. -3x+3y D. -3x-7y I think this one is B. 11x-7y, also.

  91. MATH PLEASE HELP FAST

    1.-3f^2+4f-3+8f^2+7f+1 a.5f^2-11f+2 b.11f^2+11f+2*** c.5f^2+11f-2 d.-5f+3f-2 2.3x^2+5X-5X^2-4X-2 a.-8x^2-9x+3 b.2x^2+x+3 c.-2x^2-9x+3 d.-2x^2+x+3*** 3.(8x-2y)+(3x-4y) a.11x+8y*** b.4x-y c.11x-6y d.5x+2y 4.(y+3d)-(-9y+7d) a.-10y+4d b.-8y+10d c.8y-6d***

  92. algebra PLZ HELP!!!

    y= 9/11x-17 9x-10y=179 You need to use parentheses to tell us what the problem is. Is equation 1, y = 9/(11x-17) or is it y = (9/11)x - 17? y= 9/11x-17 9x-10y=179 Rewrite them as 11 y - 9 x = -187 and -10 y + 9x = 179 Add the last two and you get y = -8

  93. lomas

    Right answer? 15(x^2+3x) + 7(x^2+3x) - 5(x^2+3x) 15x^2+45x+7x^2+21x + 5(-x^2-3x) 15x^2+45x+7x^2+21x-5x^2-15x 17x^2+51x

  94. math

    how do I solve 28 - 9x = -12 - 11x I tried adding 9x to both sides adding 11x to both sides and doing a million different methods and after i got an answer I went to check it and it was wrong I really don't understand how to do these types of equations

  95. Algebra

    Divide the rational expression. Express the quotient as a rational expression in lowest terms. (x^2+10x+21)/(x^2+11x+28) ÷ (x^2+3x)/(x^2+11x+28) (i really need to know the steps on how to do this (please just don't give me the answer i already know it)

  96. Mathematics

    write the following simultaneous equations in the form of AX= B where A,X and B are matrices 11x+6y=6 9x+5y=7 hence write the solution for x and y as a product of two matrices.

  97. Mathematics

    write the following simultaneous equations in the form of AX= B where A,X and B are matrices 11x+6y=6 9x+5y=7 hence write the solution for x and y as a product of two matrices.

  98. Mathematics

    write the following simultaneous equations in the form of AX= B where A,X and B are matrices 11x+6y=6 9x+5y=7 hence write the solution for x and y as a product of two matrices.

  99. Math

    If we multiply "a" and "b",when will: a. the product be larger than both "a" and "b"? b. the Product be less than "a"? c. the product be less than "b"? d. the product be less than"a" and "b"? e. the product be greater than "a"? f. the product be greater

  100. Trig

    How do I write cos(11x)cos(x)+sin(11x)sin(x) as a single trigonometric function? Please show steps.

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