Question
Answer
$$2\cdot(5-8i)=-16i+10$$
Explanation
Tap the blue circles to see an explanation.
| $$ \begin{aligned}2\cdot(5-8i)& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}10-16i \xlongequal{ } \\[1 em] & \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle2}{\textcircled {2}} } }}}-16i+10\end{aligned} $$ | |
| ① | Multiply $ \color{blue}{2} $ by $ \left( 5-8i\right) $ $$ \color{blue}{2} \cdot \left( 5-8i\right) = 10-16i $$ |
| ② | Combine like terms: $$ -16i+10 = -16i+10 $$ |
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