Question
Answer
$$12+2i-11+8i=10i+1$$
Explanation
| $$ \begin{aligned}12+2i-11+8i& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}10i+1\end{aligned} $$ | |
| ① | Combine like terms: $$ \color{blue}{12} + \color{red}{2i} \color{blue}{-11} + \color{red}{8i} = \color{red}{10i} + \color{blue}{1} $$ |
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