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

$4 {x}^{3} - 2 x + 3 {x}^{3} - 3 {x}^{2} + 1 =$
Now collect similar terms (terms with the same type of litteral part, such as ${x}^{3}$)
$= 7 {x}^{3} - 3 {x}^{2} - 2 x + 1$