Question
Answer
$$5x(-3x-7)=-15x^2-35x$$
Explanation
| $$ \begin{aligned}5x(-3x-7)& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}-15x^2-35x\end{aligned} $$ | |
| ① | Multiply $ \color{blue}{5x} $ by $ \left( -3x-7\right) $ $$ \color{blue}{5x} \cdot \left( -3x-7\right) = -15x^2-35x $$ |
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