Question
Answer
$$15+6i-20-8i^2=-8i^2+6i-5$$
Explanation
| $$ \begin{aligned}15+6i-20-8i^2& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}-8i^2+6i-5\end{aligned} $$ | |
| ① | Combine like terms: $$ \color{blue}{15} +6i \color{blue}{-20} -8i^2 = -8i^2+6i \color{blue}{-5} $$ |
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