(9+9.4i)+(-8.6-4i) and (9.4i)(-4i) simplify

asked May 13, 2023 58.9k views

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4 votes

We need to simplify :

$\mleft(9+9.4i\mright)+\mleft(-8.6-4i\mright)$

Combine the like terms

$\begin{gathered} \mleft(9+9.4i\mright)+\mleft(-8.6-4i\mright) \\ =(9+(-8.6))+(9.4i+(-4i)) \\ =(9-8.6)+(9.4i-4i) \end{gathered}$
=0.4+5.4i

Toothygoose answered May 18, 2023

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