Question
Answer
$$-3-2i-(11+10i)=-12i-14$$
Explanation
Tap the blue circles to see an explanation.
| $$ \begin{aligned}-3-2i-(11+10i)& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}-3-2i-11-10i \xlongequal{ } \\[1 em] & \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle2}{\textcircled {2}} } }}}-12i-14\end{aligned} $$ | |
| ① | Remove the parentheses by changing the sign of each term within them. $$ - \left( 11+10i \right) = -11-10i $$ |
| ② | Combine like terms: $$ \color{blue}{-3} \color{red}{-2i} \color{blue}{-11} \color{red}{-10i} = \color{red}{-12i} \color{blue}{-14} $$ |
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