# Math - Imaginary

137,621 results

### Algebra

State the possible number of imaginary zeros of g(x)= x^4+3x^3+7x^2-6x-13 this is how far Ive gotten:there are 4 zeros,3 positive and 1 negative If you've found four real zeroes, then there are no imaginary zeroes. You can also see that there are no imaginary zeroes directly: ...

### Precalculus

"Show that x^6 - 7x^3 - 8 = 0 has a quadratic form. Then find the two real roots and the four imaginary roots of this equation." I used synthetic division to get the real roots 2 and -1, but I can't figure out how to get the imaginary roots. I checked HotMath but all it showed...

### Math

Which describes the number and type of roots of the equation x^2-625=0? A)1 real root, 1 imaginary root B)2 real roots, 2 imaginary roots C)2 real roots D)4 real roots I went with A sqrt x^2= x (which would be the imaginary) and sqrt 625= 25 (the real)

### Algebra

The function 5x^2+2x-1's domain is all real numbers, according to the answer key. However, I don't know how to factor this to prove it. Could you show me? The function the sq. root of y-10 has a domain of all numbers so that y is greater than or equal to zero. But I don't see ...

### algebra ll-imaginary numbers

where can i find help online about imaginary numbers? i do not understand them.

### algebra2-imaginary numbers

You can add or subtract complex numbers by treating the i as a variable and combining like terms. I am having a lot of trouble figuring out these equations with imaginary numbers. 1. (3+2i)+(7-i)= 2.(1-6i)+(2-i)= 3. (2+i)-(3+i)= 4.(4+i)-(2-i)= Can someone please walk me ...

### maths

Suppose z=a+bi, where a and b are integers and i is the imaginary unit. We are given that |1+iz|=|1−iz| and |z−(13+15i)|<17. Find the largest possible value of a+b. Details and assumptions i is the imaginary unit, where i^2=−1.

### Algebra

The function f(x)=x^4−10x^3+40x^2−80x+64 has four complex roots, one of which is 2−2i. What is the sum of all real and imaginary coefficients of these roots? i here is imaginary unit i.e. i^2 = -1

### Calculus

find the intervals on which f(x) is increasing and decreasing along with the local extrema. f(x)=x^4 + 18x^2 I took the derivative and got: f'(x)= 4x^3 + 36x When I set this to zero, I get the imaginary number 3i. I can't get test values for an imaginary numbers, so I can't ...

### Maths

Suppose z=a+bi, where a and b are integers and i is the imaginary unit. We are given that |1+iz|=|1−iz| and |z−(13+15i)|<17. Find the largest possible value of a+b. i is the imaginary unit, where i^2=−1.

### Maths

The function f(x)=x^4−15(x^3)+81(x^2)−201x+182 has four complex roots, one of which is 3−2i. What is the sum of all real and imaginary coefficients of these roots? Details and assumptions i is the imaginary unit, where i2=−1.

### Imaginary land Homework poster

create a 2-D or 3 -D imaginary land. Land must include at least 5 of the following landforms: volcano, mountain range, plateau, valley, island, lake, peninsula, plain, and river to create a SNAZZY name.

### Math

Hi, I have to write a research paper and I decided to write about the history/importance of imaginary numbers. I don't know how to get started though, can you please help ! By the way I know how to write a research paper so don't give me the links about how to write 1. Instead...

### math

What are imaginary numbers

### math

How do I write 5e^(-2j) in real and imaginary forms?

### Math

(5-4i)/(8+i) ~ simplify the expression (i=imaginary #) help plz! thanks!

### Math - Imaginary

What is an Imaginary Number?

### Math

find all real and imaginary solutions x^(2/3)-2=x^(1/3)

### algebra

question The square root of a negative number is imaginary. That is you cannot find, for example, sqrt(-49) . Why? my answer Yes you can, however this is aginst the normal operations non the less we are dealing with iminiganary numbers so, as such the square root of a negative...

### Math

Find all real or imaginary solutins to each equation. 3y(2)+4v-1=0

### Math - Imaginary Numbers

I just need help with these questions, thanks. i^5 3(-2i)^2 -i(isqrt5)^2

### math

The imaginary number i is defined such that i2 = –1. What does i + i2 + i3 + ... + i23 equal?

### math

solve the equation for all real and imaginary solutions (x-3/2)^2-2(x-3/2)+26=0

### math

Find all real and Imaginary solutions 7x^(3)+70x^(2)-x-10=0

### Math

What can you multiply an expression by to eliminate the imaginary part of the denominator? 1.) (2+4i)/3i= 2.) (1-2i)/2i=

### math

Find all zeros. Real and Imaginary f(x)= 5x^4 + 16x^2 + 3

### Homework (Math)

What can you multiply this expression by to get rid of the imaginary part of the denominator? (1-2i)/2i

### math

find the imaginary solutions of the equation by factoring. x to the third power - 16x = 0

### Math

imaginary numbers Find the reciprocal of 2-7i and express it in terms of a+bi I need help please and thank you

### Math

Find the real and imaginary parts of the following complex numbers: (i) 1.5e^jπ/4 (ii) je^1.2 + j^2 e

### math

how many different 9-letter words (real or imaginary) can be formed from the letters in the word ECONOMICS?

### Math ( Pre Calc)

Find all real and imaginary roots of the polynomial equation 3x^4-x^3+4x^2-2x-4=0

### Algebra II

Which describes the number and type of roots of the equation x^2 -625=0? A. 1 real root, 1 imaginary root B. 2 real roots, 2 imaginary roots C. 2 real roots D. 4 real roots. I have x^2 = 625 x = 25 answer: 2 real roots (25 or -25) Is this correct? Thanks

### Math

Find all real or imaginary solutions to each equation. Use the method of your choice. 3y² + 4v – 1 = 0

### algebra

What are the intercepting points of y^2=-4x and x^2=y I set both equations equal to 0, but only get x=0 and there is another intercepting point. please help! Graphically, y=x^2 is positive for all values of x, whether positive or negative. The second equation is y positive for...

### math (trig)

Im having problems solving this equation: 2sin(x) = cos(x) + 2 I keep getting an imaginary number..:/

### math

how many diferrent 9-letter words (real or imaginary) can be formed from the letters in the word ECONOMICS? the ans. must be 90,720

### math

the imaginary i or j which is ewuivalent to square root of -1 has a phase difference of ____ with real number 1. what's the answer? 0,45,90,180, or 360? and why?

### Math 111

Solve the equation by the square root property. If possible, simplify radicals or rationalize denominators. Express imaginary solutions in the form a+bi. [X+ 2/3]^2=10/9

### math

Hello, I'd like to know how in developing, factoring or simplifying, we can move from: goo.gl/zZdzSs ACDE are strictly positive real constants. I is an imaginary number.

### MATH

How can you factor x^4 +1? If you go to the imaginary plane, it factors to (x^2 + i)(x^2-i) I need to factor by difference of squares. How can I do this?

### math

find whether the line 2x-y=0 is tangent, real chord on imaginary chord to the parabola y^2-2y+4y=0.

### math

If the roots of the eqn x²-2cx+ab=0 are real and unequal, then prove that the roots of x²-2(a+b)x+a²+b²+2c²=0 will be imaginary.

### math

solve and simplify the answer completely by using pure imaginary numbers/complex numbers. 2x^2+3x+2=0

### algebra,math,

is this factorable its a trinomial: x^2+2x+3 No, not factorable in the real number system. b^2 -4ac is negative, so the roots are imaginary.

### math

Suppose z=a+bi, where a and b are integers and i is the imaginary unit. We are given that |1+iz|=|1−iz| and |z−(13+15i)|<17. Find the largest possible value of a+b.

### Algebra

8-6i / 3i 3i / 4+2i I = imaginary numbers

### Math

Hello, I'd like to know how in developing, factoring or simplifying, we can move from: A + ( (1 / ( (1 / ICD) + IED) ) to: ACD *( ( - ED + I ) / (1 - ECD^2 ) ) ACDE are strictly positive real constants. I is an imaginary number.

### MATH

USING AM IMAGINARY FIGURE OF \$19,250.00 AS AN ANNUAL INCOME FIGURE, HOW MUCH MONEY COULD YOU SAVE A YEAR IF YOU BUDGETED HALF OF 2.4%?

### math

Hello, i would like to know what is the complex number of : (a*c*d)×(-e*d+i)/(1-e*c*d^2) ACDE are strictly positive real constants. I is an imaginary number. Thanks you a lot for you help.

### Math

What is a “real” zero? 1. A solution to a polynomial. 2. A non-imaginary number. 3.An x-intercept of a polynomial. 4. All of the above. The answer is 4, right?

### Precal

What are the roots, real and imaginary of: Y=x^4-6x^3+9x^2-6x+8

### Algebra 2..

Simplify. 4i (imaginary number)

### Math

Hi, I have to write a research paper and I decided to write about the history/importance of imaginary numbers. I don't know how to get started though, can you please help ! :) thanks

### math

Hello, I'd like to know how in developing, factoring or simplifying, we can move from: A + ( (1 / ( (1 / ICD) + IED) ) to: ACD *( ( - ED + I ) / (1 - ECD^2 ) ) ACDE are strictly positive real constants. I is an imaginary number. Thanks a lot for your help.

### Imaginary numbers

1/i^20 + 1/i^21 I got 1-i but i am not sure if that is right.

### Algebra

real/imaginary solutions x^(2/3)+3x^(1/3)-10=0 u=x^(1/3) u^2=(x^(1/3)^2=x^(2/3) u^2+3u-10=0 (u+5)(u-2) u=-5 u=2 x^(1/3)=-5 x^(1/3)=2 (x^(1/3)^3=-5^3(x^(1/3)^3=2^3 x=-125 or x=8

### HCA 220

Yes Ms. Sue it has to be imaginary patient.

### Art

Which definition is the best description of vanishing point? A black dot in space where al lines converge and all objects recede An imaginary point in space where all lines recede and all objects converge. The use of a horizon line to make objects appear to recede. (MY ANSWER...

### math

approximate all zeros and extrema to the nearest hundredth. how many zeros, if any, are imaginary. -x^4+2x^2+x-4. Are there no zeros?

### algebra

square root of -45? (using imaginary numbers)

### composition writing

can i get a paragraph on 'An imaginary trip to the moon'?

### Algebra 2 ..

Simplify. 4i ( What are the rules for simplifying these imaginary numbers?)

### Algebra 2

State the possible number of imaginary zeros of f(x)= 2x^3 - 4x^2 + 8x - 3. 0,1,3?

### pre cal

what are the real and imaginary zeros of the equation 2x^3 + 5x^2 - 3x + 7

### Physcis

What is the radius of a real or imaginary nucleus of 42X^85?

### Algebra

Find result of imaginary unit i. 1. (3+4i^259)(2-3i^-22)=? 2. (-i^-38)/(5-4i^-27)=?

### English

What are some imaginary elements to fantasy comics?

### Algebra HELP

What are the real and imaginary parts of the complex number: -6-i?

### algebra 2

simplify the number using the imaginary unit i √-28

### math

Use the rational zero theorem, Descartes rule of signs, and the theorem on bounds as aids in finding all real and imaginary roots to the following equation: 4x^(3)-17x^(2)+16=0

### Calculus II

What is sin(i) -- (sin of the imaginary number, i) What is cos(i)-- cosine of the imaginary number, i orrr tan(1+i) You can derive these things from the equation: Exp(i x) = cos(x) + i sin(x) ---> sin(x) = [Exp(ix) - Exp(-ix)]/(2i) cos(x) = [Exp(ix) + Exp(-ix)]/2 tan(x) = 1...

### math

You have a difference of squares (x^2-3)(x^2+3) One of these factors to two real roots, the other to two imaginary roots. You have a difference of squares (x^2-3)(x^2+3) One of these factors to two real roots, the other to two imaginary roots. Let g(x)= x^4 - 9 wat are the ...

### algebra

simplify the number using the imaginary unit i. √-16

### Math Reiny question

This is the problem you helped me with. I was curious, do I write the solution set as (1 + i3ã3)/2, (1-i3ã3)/2 change it to the standard form first x^2 - x + 7 = 0 a=1, b=-1, c = 7 x = (1 } ã(1 - 4(1)(7))/2 = (1 } ã-27)/2 Your answer is an imaginary number or ...

### Math clarification Reiny

This is the problem you helped me with. I was curious, do I write the solution set as (1 + i3ã3)/2, (1-i3ã3)/2 change it to the standard form first x^2 - x + 7 = 0 a=1, b=-1, c = 7 x = (1 } ã(1 - 4(1)(7))/2 = (1 } ã-27)/2 Your answer is an imaginary number or ...

### Algebra Problem

complete the square(real or imaginary) a^2-12a+35=0 my answers are a=7 a=5

### Algebra

Write all real and imaginary zeros. f(x)=x^3-8x^2+x-8 -8--1,-2,-4,-8 1 -+1,-+2,-+4,-+8 1-8 1-8 1 1-7-6 1 -7 -6 -14 2 1 -8 1 -8 2 -12 -22 1 -6 -11 -30 4 1 -8 1 -8 4 -16 -60 1 -4 -15 -52 answer (?) 8 is zero of f(x) 8 1 -8 1 -8 8 0 8 1 0 10

### Algebra

Write all real and imaginary zeros. f(x)=x^3-8x^2+x-8 -8--1,-2,-4,-8 1 -+1,-+2,-+4,-+8 1 -8 1 -8 1 1 -7 -6 1 -7-6 -14 2 1 -8 1 -8 2 -12 -22 1 -6 -11 14 4 1 -8 1 -8 4 -16 -60 1 -4 -15 -52 8 1 -8 1 -8 8 0 8 1 0 1 0 answer: 8 is zero of f(x)

### algebra

Find all real and imaginary solutions to equation. b^4+13b^2+36 = 0

### algebra

simplify the number using the imaginary unit i. square root of -16

### algebra plsssSSS

What are the real or imaginary solution of the polynomials x^4 -52x^2 +576=0

### Math

Find the imaginary part of (cos12 degrees +i*sin12 degrees +cos48 degrees +isin48 degrees)^6.

x^2 + 2x + 2 = 0 The answer has an imaginary number in it which we're supposed to solve for, but I'm having trouble with it. Thanks for any help!

Elocution on topic 'An imaginary trip to the moon' Where I can find the same?

### algebra

1)Use synthetic subsitution to find f(-3)for f(x)=x^4-4x^3+2x^2-4x+6 answer= -15 2)One factor of x^3+2x^2-11x-12 is x+4. find the remaining factors answer= x-1;x-3 3)Which describes the number and type of roots of the equation x^3+121x=0 answer= 1 real root,two imaginary roots...

### Math

Is there any one who knows if I am right? Do not solve, show possibilities of Descartes's rule of signs for roots. 4x^3-9x^2+6x+4=0 f(x)=4x^3-9x^2+6x=4 - + + one change =4(-x)^3-9(-x)^2+6(-x)+4 - + - + three changes Positive Negative Imaginary 2 1 0 1 2 0 3 possible roots

### science

What imaginary line encircling the Earth is 90 degrees from both poles at every point ?

### algebra

Find all real or imaginary solutions to equation. Use the method of your choice. 3v^2+4u-1=0

I want some help writing about an imaginary trip to the moon, what i heard and touched

### probability

how many different 10-letter words (real or imaginary) can be formed from the letters in the word MONOCHROME?

### World Geography

The Prime Meridian and other imaginary north-south lines measure

### physics

1- Describe an imaginary process that satisfies the first law but violates the second law of thermodynamics. 2-Describe an imaginary process that satisfies the second law but violates the first law of thermodynamics.

### math

Find the product and enter the real and imaginary parts below. Note that you do not need to type in the since it is already given to you. Simplify your square roots as much as possible. sqrt-27((sqrt-5)-(sqrt-11))

### Math

Factor the polynomial as the product of factors that are irreducible over the real numbers. Then write the polynomial in completely factored form involving complex nonreal or imaginary numbers. x^4 + 20x^2 -44=0