Question
Answer
$$7+5i-4+2i=7i+3$$
Explanation
| $$ \begin{aligned}7+5i-4+2i& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}7i+3\end{aligned} $$ | |
| ① | Combine like terms: $$ \color{blue}{7} + \color{red}{5i} \color{blue}{-4} + \color{red}{2i} = \color{red}{7i} + \color{blue}{3} $$ |
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