Question
Answer
$$-6x(-7x+1)=42x^2-6x$$
Explanation
Tap the blue circles to see an explanation.
| $$ \begin{aligned}-6x(-7x+1)& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}-(-42x^2+6x) \xlongequal{ } \\[1 em] & \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle2}{\textcircled {2}} } }}}42x^2-6x\end{aligned} $$ | |
| ① | Multiply $ \color{blue}{6x} $ by $ \left( -7x+1\right) $ $$ \color{blue}{6x} \cdot \left( -7x+1\right) = -42x^2+6x $$ |
| ② | Remove the parentheses by changing the sign of each term within them. $$ - \left(-42x^2+6x \right) = 42x^2-6x $$ |
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