Question
Answer
$$5x^2(2x+7y)=10x^3+35x^2y$$
Explanation
| $$ \begin{aligned}5x^2(2x+7y)& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}10x^3+35x^2y\end{aligned} $$ | |
| ① | Multiply $ \color{blue}{5x^2} $ by $ \left( 2x+7y\right) $ $$ \color{blue}{5x^2} \cdot \left( 2x+7y\right) = 10x^3+35x^2y $$ |
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