SOLUTION: Please help for equation: Rationalise following complex quotients:( 2-3i)/(1+2i)

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Question 962570: Please help for equation: Rationalise following complex quotients:( 2-3i)/(1+2i)
Answer by ankor@dixie-net.com(22740) About Me  (Show Source):
You can put this solution on YOUR website!
%28+2-3i%29%2F%281%2B2i%29
multiply by the conjugate of the denominator over itself
%28+2-3i%29%2F%281%2B2i%29 * %281-2i%29%2F%281-2i%29 = %28%282-3i%29%281-2i%29%29%2F%28%281%2B2i%29%281-2i%29%29 = %28%282-4i-3i%2B6i%5E2%29%29%2F%28%281%2B2i-2i-4i%5E2%29%29 = %28%282-7i%2B6%28-1%29%29%29%2F%28%281-4%28-1%29%29%29 = %28%282-7i-6%29%29%2F%28%281%2B4%29%29 = %28%28-4-7i%29%29%2F5