# How do you combine (4x^2 – 5x + 1) – (x^3 + x^2 – 3x + 4) ?

Jun 21, 2018

$- {x}^{3} + 3 {x}^{2} - 2 x - 3$

#### Explanation:

The most important thing to remember is to combine like terms

• $4 {x}^{2} - {x}^{2} = 3 {x}^{2}$
• $- 5 x - \left(- 3\right) = - 2 x$
• $1 - 4 = - 3$

$- {x}^{3} + 3 {x}^{2} - 2 x - 3$