Question
Answer
$$(-1-2i)\cdot2=-4i-2$$
Explanation
Tap the blue circles to see an explanation.
| $$ \begin{aligned}(-1-2i)\cdot2& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}-2-4i \xlongequal{ } \\[1 em] & \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle2}{\textcircled {2}} } }}}-4i-2\end{aligned} $$ | |
| ① | $$ \left( \color{blue}{-1-2i}\right) \cdot 2 = -2-4i $$ |
| ② | Combine like terms: $$ -4i-2 = -4i-2 $$ |
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