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