Answer
-6$x^{3}$ - 3$x^{2}$ - 4x + 4
Work Step by Step
1. Distribute negative signs
-(8$x^{3}$ + x - 3) + (2$x^{3}$ + $x^{2}$) - (4$x^{2}$ + 3x - 1)
= -8$x^{3}$ - x + 3 + 2$x^{3}$ + $x^{2}$ - 4$x^{2}$ - 3x + 1
2. Group like terms together.
(-8$x^{3}$ + 2$x^{3}$) + ($x^{2}$- 4$x^{2}$) + (-x - 3x) + (3 + 1)
3. Add like terms.
-6$x^{3}$ - 3$x^{2}$ - 4x + 4