Question
Answer
$$15(-4i+2)=-60i+30$$
Explanation
| $$ \begin{aligned}15(-4i+2)& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}-60i+30\end{aligned} $$ | |
| ① | Multiply $ \color{blue}{15} $ by $ \left( -4i+2\right) $ $$ \color{blue}{15} \cdot \left( -4i+2\right) = -60i+30 $$ |
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