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(3-5i)^2 i know the answer I’m just confused on how to get to that point. Please and thank you!

(3-5i)^2 i know the answer I’m just confused on how to get to that point. Please and thank you!
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5 votes
(3-5i)^2

i know the answer I’m just confused on how to get to that point. Please and thank you!

User VikVik
by
8.0k points

1 Answer

2 votes


(3-5i)^2\\\\=3^2-2(3)(5i) + (5i)^2\\\\=9-30i +25i^2\\\\=9-30i +25(-1)~~~~;[i^2=-1]\\\\=9-30i-25\\\\=-16-30i

User Maksonnie
by
8.4k points
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