Question
Answer
$$-8x(8x+4)=-64x^2-32x$$
Explanation
Tap the blue circles to see an explanation.
| $$ \begin{aligned}-8x(8x+4)& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}-(64x^2+32x) \xlongequal{ } \\[1 em] & \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle2}{\textcircled {2}} } }}}-64x^2-32x\end{aligned} $$ | |
| ① | Multiply $ \color{blue}{8x} $ by $ \left( 8x+4\right) $ $$ \color{blue}{8x} \cdot \left( 8x+4\right) = 64x^2+32x $$ |
| ② | Remove the parentheses by changing the sign of each term within them. $$ - \left(64x^2+32x \right) = -64x^2-32x $$ |
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