Question
Answer
$$2-6i-(-11-10i)=4i+13$$
Explanation
Tap the blue circles to see an explanation.
| $$ \begin{aligned}2-6i-(-11-10i)& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}2-6i+11+10i \xlongequal{ } \\[1 em] & \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle2}{\textcircled {2}} } }}}4i+13\end{aligned} $$ | |
| ① | Remove the parentheses by changing the sign of each term within them. $$ - \left( -11-10i \right) = 11+10i $$ |
| ② | Combine like terms: $$ \color{blue}{2} \color{red}{-6i} + \color{blue}{11} + \color{red}{10i} = \color{red}{4i} + \color{blue}{13} $$ |
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