# Question #af025

Aug 21, 2016

$6 {x}^{3} - 17 x + 10$

#### Explanation:

As the format used was not very clear I have assumed this is what the expression looks like.

Remove the bracket first and then collect like terms.

$12 {x}^{3} - 3 \left(2 {x}^{3} + 4 x - 1\right) - 5 x + 7$

=$12 {x}^{3} - 6 {x}^{3} - 12 x + 3 - 5 x + 7 \text{ notice the sign changes}$

=$6 {x}^{3} - 17 x + 10$