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