Question
Answer
$$-13+16i-(3+4i)=12i-16$$
Explanation
Tap the blue circles to see an explanation.
| $$ \begin{aligned}-13+16i-(3+4i)& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}-13+16i-3-4i \xlongequal{ } \\[1 em] & \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle2}{\textcircled {2}} } }}}12i-16\end{aligned} $$ | |
| ① | Remove the parentheses by changing the sign of each term within them. $$ - \left( 3+4i \right) = -3-4i $$ |
| ② | Combine like terms: $$ \color{blue}{-13} + \color{red}{16i} \color{blue}{-3} \color{red}{-4i} = \color{red}{12i} \color{blue}{-16} $$ |
This page was created using
Complex Expression calculator