Sunday
April 20, 2014

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

Answer this Question

First Name:
School Subject:
Answer:

Related Questions

algebra - 1.)correct 2.)wrong---> the first term is wrong 4(3a^2)^2 = 36a^4 3...
Advanced Algebra - I some problems that I need help with please. Add or subtact ...
Roots and Pre-cal - Find the roots of the function f(x)= x^2 +2x+2 a)-1 + sq ...
algebra - 1)Write the expression 9n^6+7n^3-6 in quadratic form,if possible A.9(n...
Math - We have to simplify complex numbers and I was wondering whether I did ...
Math simplifying mixed radicals - Please help me simplify these following mixed ...
Math simplifying mixed radicals - Please help me simplify these following mixed...
Math - Just need some help... Directions: Multiply or raise to the power as ...
Algebra - Rationalize each expression by building perfect nth root factors for ...
Math PLEASE HELP ASAP - -PLEASE INCLUDE SOLUTIONS AND EXPLAIN HOW YOU DID IT ...

Search
Members