Question
Answer
$$3-2i-(8+2i)=-4i-5$$
Explanation
Tap the blue circles to see an explanation.
| $$ \begin{aligned}3-2i-(8+2i)& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}3-2i-8-2i \xlongequal{ } \\[1 em] & \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle2}{\textcircled {2}} } }}}-4i-5\end{aligned} $$ | |
| ① | Remove the parentheses by changing the sign of each term within them. $$ - \left( 8+2i \right) = -8-2i $$ |
| ② | Combine like terms: $$ \color{blue}{3} \color{red}{-2i} \color{blue}{-8} \color{red}{-2i} = \color{red}{-4i} \color{blue}{-5} $$ |
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