Question
Answer
$$2(4i+2)+3i=11i+4$$
Explanation
Tap the blue circles to see an explanation.
| $$ \begin{aligned}2(4i+2)+3i& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}8i+4+3i \xlongequal{ } \\[1 em] & \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle2}{\textcircled {2}} } }}}11i+4\end{aligned} $$ | |
| ① | Multiply $ \color{blue}{2} $ by $ \left( 4i+2\right) $ $$ \color{blue}{2} \cdot \left( 4i+2\right) = 8i+4 $$ |
| ② | Combine like terms: $$ \color{blue}{8i} +4+ \color{blue}{3i} = \color{blue}{11i} +4 $$ |
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