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