Question
Answer
$$2t\cdot(5-t)=-2t^2+10t$$
Explanation
Tap the blue circles to see an explanation.
| $$ \begin{aligned}2t\cdot(5-t)& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}10t-2t^2 \xlongequal{ } \\[1 em] & \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle2}{\textcircled {2}} } }}}-2t^2+10t\end{aligned} $$ | |
| ① | Multiply $ \color{blue}{2t} $ by $ \left( 5-t\right) $ $$ \color{blue}{2t} \cdot \left( 5-t\right) = 10t-2t^2 $$ |
| ② | Combine like terms: $$ -2t^2+10t = -2t^2+10t $$ |
This page was created using
Simplify Rational Expressions