Answer
$$2u^4v(5u^2-3uv-7v^2)=10u^6v-6u^5v^2-14u^4v^3$$
Explanation
| $$ \begin{aligned}2u^4v(5u^2-3uv-7v^2)& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}10u^6v-6u^5v^2-14u^4v^3\end{aligned} $$ | |
| ① | Multiply $ \color{blue}{2u^4v} $ by $ \left( 5u^2-3uv-7v^2\right) $ $$ \color{blue}{2u^4v} \cdot \left( 5u^2-3uv-7v^2\right) = 10u^6v-6u^5v^2-14u^4v^3 $$ |
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