Question
Answer
$$-(9i+2)-4-8i=-17i-6$$
Explanation
Tap the blue circles to see an explanation.
| $$ \begin{aligned}-(9i+2)-4-8i& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}-9i-2-4-8i \xlongequal{ } \\[1 em] & \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle2}{\textcircled {2}} } }}}-17i-6\end{aligned} $$ | |
| ① | Remove the parentheses by changing the sign of each term within them. $$ - \left(9i+2 \right) = -9i-2 $$ |
| ② | Combine like terms: $$ \color{blue}{-9i} \color{red}{-2} \color{red}{-4} \color{blue}{-8i} = \color{blue}{-17i} \color{red}{-6} $$ |
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