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