Question
Answer
$$3x^2(-4x^3+10x^2-7x+2)=-12x^5+30x^4-21x^3+6x^2$$
Explanation
| $$ \begin{aligned}3x^2(-4x^3+10x^2-7x+2)& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}-12x^5+30x^4-21x^3+6x^2\end{aligned} $$ | |
| ① | Multiply $ \color{blue}{3x^2} $ by $ \left( -4x^3+10x^2-7x+2\right) $ $$ \color{blue}{3x^2} \cdot \left( -4x^3+10x^2-7x+2\right) = -12x^5+30x^4-21x^3+6x^2 $$ |
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