Question
Answer
$$-14i+15-(-4i+4)=-10i+11$$
Explanation
Tap the blue circles to see an explanation.
| $$ \begin{aligned}-14i+15-(-4i+4)& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}-14i+15+4i-4 \xlongequal{ } \\[1 em] & \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle2}{\textcircled {2}} } }}}-10i+11\end{aligned} $$ | |
| ① | Remove the parentheses by changing the sign of each term within them. $$ - \left( -4i+4 \right) = 4i-4 $$ |
| ② | Combine like terms: $$ \color{blue}{-14i} + \color{red}{15} + \color{blue}{4i} \color{red}{-4} = \color{blue}{-10i} + \color{red}{11} $$ |
This page was created using
Complex Expression calculator