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April 27, 2015

Homework Help: math

Posted by jack on Sunday, October 16, 2011 at 10:54am.

I Wanted To Find The Square Root Of (1-2i)
But I Didn't Know How To Solve It.
My Solution :

x+yi = sqr(1-2i)
x2-y2+2xyi = 1- 2i
x2-y2 = 1
2xy = -2
y = - 1/x

x2 - (-1/x) = 1 ] * x2

x4-x2-1 = 0

How To Evaluated (x4-x2-1) ?

I Tried To Sol

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