Question
Answer
$$9-2i-2-9i=-11i+7$$
Explanation
| $$ \begin{aligned}9-2i-2-9i& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}-11i+7\end{aligned} $$ | |
| ① | Combine like terms: $$ \color{blue}{9} \color{red}{-2i} \color{blue}{-2} \color{red}{-9i} = \color{red}{-11i} + \color{blue}{7} $$ |
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