Question
Answer
$$4r\cdot3i+4r\cdot3i=24ir$$
Explanation
Tap the blue circles to see an explanation.
| $$ \begin{aligned}4r\cdot3i+4r\cdot3i& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} \htmlClass{explanationCircle explanationCircle2}{\textcircled {2}} } }}}12ir+12ir \xlongequal{ } \\[1 em] & \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle3}{\textcircled {3}} } }}}24ir\end{aligned} $$ | |
| ① | $$ 4 r \cdot 3 i = 12 i r $$ |
| ② | $$ 4 r \cdot 3 i = 12 i r $$ |
| ③ | Combine like terms: $$ \color{blue}{12ir} + \color{blue}{12ir} = \color{blue}{24ir} $$ |
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