Answer
$$3x(-x+5x^2)=15x^3-3x^2$$
Explanation
Tap the blue circles to see an explanation.
| $$ \begin{aligned}3x(-x+5x^2)& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}-3x^2+15x^3 \xlongequal{ } \\[1 em] & \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle2}{\textcircled {2}} } }}}15x^3-3x^2\end{aligned} $$ | |
| ① | Multiply $ \color{blue}{3x} $ by $ \left( -x+5x^2\right) $ $$ \color{blue}{3x} \cdot \left( -x+5x^2\right) = -3x^2+15x^3 $$ |
| ② | Combine like terms: $$ 15x^3-3x^2 = 15x^3-3x^2 $$ |
This page was created using
Simplify polynomials calculator