Can you help me with this one please? Only part b

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asked Aug 22, 2023 171k views

4 votes

Can you help me with this one please? Only part b

Mathematics
high-school

Eric Ahn asked

by Eric Ahn

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1 Answer

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Simplifying,

$\begin{gathered} ((5+2i)^2-2)i\rightarrow(25+20i+4i^2-2)i\rightarrow(23+20i-4)i \\ \\ \rightarrow(19+20i)i\rightarrow19i+20i^2\rightarrow-20+19i \end{gathered}$

Serhiisavruk answered Aug 26, 2023

by Serhiisavruk

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