# How do you simplify (8x^3 + 5x) - 3(x^3 + 2)?

Mar 3, 2018

$5 {x}^{3} + 5 x - 6$

#### Explanation:

First, expand the second bracket:

$\left(8 {x}^{3} + 5 x\right) - 3 \cdot {x}^{3} - 3 \cdot 2$

$\left(8 {x}^{3} + 5 x\right) - 3 {x}^{3} - 6$

Then collect "like" terms :

$8 {x}^{3} - 3 {x}^{3} + 5 x - 6$

$\textcolor{red}{5 {x}^{3} + 5 x - 6}$