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Perform the indicated operation. (5 - 21 a 22 29 - 201 c 49 b 21 d 29

Perform the indicated operation. (5 - 21 a 22 29 - 201 c 49 b 21 d 29-example-1
User Rikesh
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We have to perform this operation with this complex number:


\begin{gathered} (5-2i)^2 \\ (5-2i)(5-2i) \\ 5^2+2\cdot(-2i)\cdot5+(-2i)^2 \\ 25-20i+4\cdot i^2 \\ 25-20i+4(-1) \\ 25-20i-4 \\ 21-20i \end{gathered}

Answer: 21 - 20i

User Kevin Youn
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