Question
Answer
$$-5x\cdot2(6x-1)=-60x^2+10x$$
Explanation
Tap the blue circles to see an explanation.
| $$ \begin{aligned}-5x\cdot2(6x-1)& \xlongequal{ }-10x(6x-1) \xlongequal{ } \\[1 em] & \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}-(60x^2-10x) \xlongequal{ } \\[1 em] & \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle2}{\textcircled {2}} } }}}-60x^2+10x\end{aligned} $$ | |
| ① | Multiply $ \color{blue}{10x} $ by $ \left( 6x-1\right) $ $$ \color{blue}{10x} \cdot \left( 6x-1\right) = 60x^2-10x $$ |
| ② | Remove the parentheses by changing the sign of each term within them. $$ - \left(60x^2-10x \right) = -60x^2+10x $$ |
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