Answer
$$4+xi-(6-2xi)=3ix-2$$
Explanation
Tap the blue circles to see an explanation.
| $$ \begin{aligned}4+xi-(6-2xi)& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}4+ix-6+2ix \xlongequal{ } \\[1 em] & \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle2}{\textcircled {2}} } }}}3ix-2\end{aligned} $$ | |
| ① | Remove the parentheses by changing the sign of each term within them. $$ - \left( 6-2ix \right) = -6+2ix $$ |
| ② | Combine like terms: $$ \color{blue}{4} + \color{red}{ix} \color{blue}{-6} + \color{red}{2ix} = \color{red}{3ix} \color{blue}{-2} $$ |
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