Question
Answer
$$(8-5)\cdot(6+i)=3i+18$$
Explanation
Tap the blue circles to see an explanation.
| $$ \begin{aligned}(8-5)\cdot(6+i)& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}3\cdot(6+i) \xlongequal{ } \\[1 em] & \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle2}{\textcircled {2}} } }}}18+3i \xlongequal{ } \\[1 em] & \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle3}{\textcircled {3}} } }}}3i+18\end{aligned} $$ | |
| ① | Combine like terms: $$ \color{blue}{8} \color{blue}{-5} = \color{blue}{3} $$ |
| ② | Multiply $ \color{blue}{3} $ by $ \left( 6+i\right) $ $$ \color{blue}{3} \cdot \left( 6+i\right) = 18+3i $$ |
| ③ | Combine like terms: $$ 3i+18 = 3i+18 $$ |
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