Question
Answer
$$7-4i-(2+3i)=-7i+5$$
Explanation
Tap the blue circles to see an explanation.
| $$ \begin{aligned}7-4i-(2+3i)& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}7-4i-2-3i \xlongequal{ } \\[1 em] & \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle2}{\textcircled {2}} } }}}-7i+5\end{aligned} $$ | |
| ① | Remove the parentheses by changing the sign of each term within them. $$ - \left( 2+3i \right) = -2-3i $$ |
| ② | Combine like terms: $$ \color{blue}{7} \color{red}{-4i} \color{blue}{-2} \color{red}{-3i} = \color{red}{-7i} + \color{blue}{5} $$ |
This page was created using
Complex Expression calculator