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college algebra help

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(6-2i)^2

Must simplify. The answer is 32-24i but i need to know the steps.

Dec 10th, 2014

(6-2i)^2= 6^2+ (2i)^2- 2*6*2i = 36+ 4i^2 - 24i


because i^2=-1


so 36+4i^2-24i=36-4-24i=32-24i

Dec 10th, 2014

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