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Algebra: Complex Numbers

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Question 38291: a/bc + b/ac - c/ab = ?
Click here to see answer by hellyeah(21)

Question 38350: Express the following as a complex number in the form a + ib:
The complex conjugate of i^4n-3, with n Î Z
Please show you working out, and thank you in advance for your help
Click here to see answer by AnlytcPhil(958)

Question 38541: How do I add imaginary numbers that are square roots, do I convert first to i then add? Example= sqrt(-9) + sqrt (-36)
Click here to see answer by fractalier(1804)

Question 38541: How do I add imaginary numbers that are square roots, do I convert first to i then add? Example= sqrt(-9) + sqrt (-36)
Click here to see answer by AnlytcPhil(958)

Question 38459This question is from textbook Algebra 2
: find the number of complex roots,the possible number of real rational roots
x^7-2x^6+3x^2-2x+5=0
and
8-4x^3+4x^6=0This question is from textbook Algebra 2

Click here to see answer by rapaljer(3620)

Question 38626: Express 1 + Ö3i in exponential form
Thank you in advance for your help
Click here to see answer by venugopalramana(3286)

Question 38625: Draw on an Argand Diagram the complex nuner 1 + Ö3i and its conjugate
Thank you in advance for your help
Click here to see answer by Nate(3495)

Question 28263: 3u^2+40=4
Click here to see answer by tran3209(100)

Question 27082: x^4+3x^2-4=0
Click here to see answer by tran3209(100)

Question 39811: square root(2i)-3*square root(3i)+4*square root(2i)+6*square root(3i)
what is the answer to this equation?
Click here to see answer by fractalier(1804)

Question 40262: I couldn't figure out how to type a straight line on my computer so I used [ instead.
[ 4] + [ - 3 ]
Click here to see answer by fractalier(1804)

Question 38549: square root of 18x2 multiplied by the square root of 12x

2) Divide 3+2i/1-1i

3) Write a quadratic equation whose solutions are 3+i and 3-i
Click here to see answer by tran3209(100)

Question 28264: (-3i square root of 6)^2
Click here to see answer by fractalier(1804)

Question 41220: what is i to the 16th power?
What is i to the 255th power?
What is i to the 5692nd power?
Click here to see answer by fractalier(1804)

Question 41215: What is the answer of (3-2i)/(7-6i) in standard form. Thank you
Click here to see answer by zeynep(43)

Question 42031: Why does the Trichotomy Property not apply to all complex numbers?
Thank you
Click here to see answer by rapaljer(3620)

Question 42025: -|-5|-|-3|=
Click here to see answer by rapaljer(3620)

Question 42026: (-15.2)(-17.2)
Click here to see answer by rapaljer(3620)

Question 42108: 1. Newtons law of cooling states that the rate at which an object cools varies directly as the difference between its temperature and the temperature of the surrounding air. At the moment a steel plate at 270 degrees C is placed in air that is at 20 degrees C, its rate of cooling is 50 degrees C per minute. How fast is it cooling when the plate temperature is 100 degrees C?
Click here to see answer by psbhowmick(456)

Question 42126: Use the order of operations to simplify the expression.
(-4 - 3)(-2 + 6) - 63
Click here to see answer by fractalier(1804)

Question 32035: solve and graph:
-3 < x - 3 is not > 6, D = {Integers}
Click here to see answer by fractalier(1804)

Question 42155: i need to solve this equation 7x squared + 2x-2=0 bye using the quadradic formula
Click here to see answer by fractalier(1804)

Question 42283: (y^2-7y+12)(3y+12)/(y^2+y-12)(y-4)^2
Click here to see answer by tutorcecilia(2042)

Question 42589: solve x squared-4x-5=0
Click here to see answer by Earlsdon(4898)

Question 42605This question is from textbook
: I am lost on this problem...
radical -50 times radical -2This question is from textbook

Click here to see answer by AnlytcPhil(958)

Question 42687: please help
Write each complex number in standard form a + bi showing all work
a)
i^3(i-1)
b)
1-3i/2+i
c) (3+2i)-(1-i)
d)
(1+2i)^2
Click here to see answer by Nate(3495)

Question 42774: |2x-3|=9
help with explanation
and
x^2-6x+13=0
in standard form a +bi
Click here to see answer by Nate(3495)

Question 42808: (a+bi)^2=2i
then what are the possible values of a and b?

Click here to see answer by stanbon(26259)

Question 42806: Hello-
I'm stuck on an Algebra II problem and hope you can help. The equation is as follows:
1/8 (3m-5)= 6/5 (6m-2)+5
I have never had a problem like this one.
I would appreciate your help and guidance.
Thank you very much.
Sam
Click here to see answer by stanbon(26259)

Question 42820This question is from textbook algebra and trigonometry with analytic geometry

: Find the value of k for which x=4 is a solution to the equation 3x + k=23. I have an answer of 20=k. I worked it out but unsure of my answer. Thanks very much for looking at this problem.This question is from textbook algebra and trigonometry with analytic geometry

Click here to see answer by josmiceli(3003)

Question 40889: This is one of the so called examples in my book
Simplify in euler form: (1-i)^5 (sqrt3+i)^3
How is it possible to get to this?
(sqrt2 e(-ipi/4))^5 (2e(ipi/6)^3.
And from there is simplifies down to -32-32i, that I am ok with but why is it no one can explain the first step? Smoke and mirrors?
And in all examples they conveniently use (1-i) but what about any other numbers?
Surely someone must know how to explain this?

Click here to see answer by fractalier(1804)

Question 42951: Factor out the greatest common factor. Simplify the factors, if possible.
3x(5x+6)-4(5x+6)
Click here to see answer by fractalier(1804)

Question 43025: Evaluate: b to the power of 2 minus 2bc + c to the power of 2
if b = 4 and c = -1
Click here to see answer by gsmani_iyer(161)

Question 43216: 15 - 4 + 1 ÷ 2 * 3
Click here to see answer by Nate(3495)

Question 43326: Find the product.

Click here to see answer by josmiceli(3003)

Question 43329: Find the product
(2r-11)(2r+11)
Click here to see answer by checkley71(8405)

Question 43325: Add or subtract as indicated.

Click here to see answer by fractalier(1804)

Question 43538: 50 over t-2 - 16 over t = 30 over t
having problems with this.
the answer is -23. Just wondering how they got it
show work
Click here to see answer by Nate(3495)

Question 43539: x over x+1 + 5 over x = 1 over x^2+x
i'ved worked on this problem can't seem to get the right answer.
the book says the answer is -4
please show me how they get this
thanks
Click here to see answer by Nate(3495)

Question 43769: If f(x) = x^2 + 2 and g(x) = 2x - 3, find f(g(1))
Click here to see answer by Nate(3495)

Question 43884: How do you simplify i^42?
Is the answer -1?
Thanks.
Click here to see answer by stanbon(26259)

Question 43916: s=0.5(70-25)40=
can u solve this for me and explain it please
Click here to see answer by AnlytcPhil(958)

Question 44062: Please help me solve this equation:
Click here to see answer by adamchapman(301)

Question 44303: for i= square root -1, if 3i(2+5i)=x+6i, then x=?
Click here to see answer by venugopalramana(3286)

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