Question
Answer
$$2j^2(5j^3-15j^2+2j+2)=10j^5-30j^4+4j^3+4j^2$$
Explanation
| $$ \begin{aligned}2j^2(5j^3-15j^2+2j+2)& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}10j^5-30j^4+4j^3+4j^2\end{aligned} $$ | |
| ① | Multiply $ \color{blue}{2j^2} $ by $ \left( 5j^3-15j^2+2j+2\right) $ $$ \color{blue}{2j^2} \cdot \left( 5j^3-15j^2+2j+2\right) = 10j^5-30j^4+4j^3+4j^2 $$ |
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