Question
Answer
$$3(x^2+8x+16)-3x+8=3x^2+21x+56$$
Explanation
Tap the blue circles to see an explanation.
| $$ \begin{aligned}3(x^2+8x+16)-3x+8& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}3x^2+24x+48-3x+8 \xlongequal{ } \\[1 em] & \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle2}{\textcircled {2}} } }}}3x^2+21x+56\end{aligned} $$ | |
| ① | Multiply $ \color{blue}{3} $ by $ \left( x^2+8x+16\right) $ $$ \color{blue}{3} \cdot \left( x^2+8x+16\right) = 3x^2+24x+48 $$ |
| ② | Combine like terms: $$ 3x^2+ \color{blue}{24x} + \color{red}{48} \color{blue}{-3x} + \color{red}{8} = 3x^2+ \color{blue}{21x} + \color{red}{56} $$ |
This page was created using
Simplify polynomials calculator