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