Question
Answer
$$-8+10i-(-7-14i)=24i-1$$
Explanation
Tap the blue circles to see an explanation.
| $$ \begin{aligned}-8+10i-(-7-14i)& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}-8+10i+7+14i \xlongequal{ } \\[1 em] & \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle2}{\textcircled {2}} } }}}24i-1\end{aligned} $$ | |
| ① | Remove the parentheses by changing the sign of each term within them. $$ - \left( -7-14i \right) = 7+14i $$ |
| ② | Combine like terms: $$ \color{blue}{-8} + \color{red}{10i} + \color{blue}{7} + \color{red}{14i} = \color{red}{24i} \color{blue}{-1} $$ |
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