# How do you write (5x^3 − 5x − 8) − (2x^3 + 4x + 2) in standard form?

##### 1 Answer
Feb 27, 2017

$3 {x}^{3} - 9 x - 10$

#### Explanation:

$\left(5 {x}^{3} - 5 x - 8\right) - \left(2 {x}^{3} + 4 x + 2\right)$

$\cancel{\textcolor{red}{5 {x}^{3}}} - 5 x - 8 - \cancel{\textcolor{red}{2 {x}^{3}}} - 4 x - 2$

$3 {x}^{3} - \cancel{\textcolor{g r e e n}{5 x}} - 8 - \cancel{\textcolor{g r e e n}{4 x}} - 2$

$3 {x}^{3} - 9 x - \cancel{\textcolor{b l u e}{8}} - \cancel{\textcolor{b l u e}{2}}$

$3 {x}^{3} - 9 x - 10$