SOLUTION: (4-2i)^2 = 12-16i how?

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Question 621743: (4-2i)^2 = 12-16i how?
Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
(4-2i)^2 = 12-16i how?
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(4-2i)*(4-2i) = 4*(4-2i) - 2i*(4-2i)
= 16-8i - 8i+4i^2
= 16 - 16i + 4i^2
= 16 - 16i - 4
= 12 - 16i