217 Answered Questions for the topic Complex Numbers

Complex Numbers Simplify

01/06/14

How would you simplify 2/3-i?
I tried to multiply the 3-i on the top and bottom but then I get lost on what belongs on the bottom and on the top.    I thought I would have something like 6-2i/9 but that doesn't seem right.
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Expert Answers •2

12/18/13

Perform the operation and write all work in standard form.
2/ 1 + i + 3/ 1 - i
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12/18/13

Write the quotient in standard form.
A. 2 + i/ i B. 3 + i/ 4-3i
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12/18/13

Given 4+3i
A. Identify the complex conjugate B. Multiply the conjugate pairs & write in standard form
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12/15/13

A. 3-sqrt(-16) B. -4 C. -2i+i^2 D. (sqrt(-43)^2 E. 3i^2-5i^3
The directions say to simplify and write in standard form a+bi.
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Complex Numbers Math Find Values Math Analysis

12/15/13

Find the value of a and b if (a-2)+3bi=7+6i
This is for my math analysis class, and I can't quite figure out how to do it!
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Complex Numbers

09/25/13

Complex number in standard form?
Write the complex number in standard form:   the problem is actually (3-2i) to the second power:(3-2i)^2  (times) (3+2i) all over (5-i) So the question is: (3-2i)^2... more
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Complex Numbers Standard Form

09/25/13

write the complex number in standard form?
write the complex number in standard form: (3-2i)^2(3+2i)                                                              ... more
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Complex Numbers

09/12/13

complex number
multiply:-                (2√-3+3√-2) by (4√-3-5√-2)
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Complex Numbers

08/11/13

How can u subtract a variable from. A whole # and that variable?
For example x-5x would it remain 5x or just 5?
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Complex Numbers

07/05/13

complex numbers equation derivation
How is the expansion of the square of |z1+z2| derived?
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Complex Numbers

05/23/13

(2+i)x+(3+2i)y=3
Find the value of X and Y  
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Complex Numbers

03/23/13

5x^2+7x+3=0
find the exact solutions to the quadratic equation in the complex numbers 
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Complex Numbers

03/20/13

what is the vertex of f(x)=-3x^2+7x+12
I need to find the vertex and the x-intercepts
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Complex Numbers

12/11/12

calculate n plot (uv)18 if u is 2-2i and v 1-1i
calculate n plot (uv)18 if u is 2-2i and v 1-1i
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11/28/12

using demoivre's theorem, what is the value of (8-8iv 3)^3/4
I am having trouble understanding demoivre's theorem. I am not quite grasping the concept. Please help with this homework problem.
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Complex Numbers

11/16/12

4 divided by i
I need help with the problem 4/i
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Expert Answers •2

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