Me. i'm confused.

add or subtract.
(4x^2-2x-+2)

you so much in advance.

Vertically organize the problems
  (         -4x^2-2x-1)
- ( 3x^3             +2)
Eliminate the minus sign by multiplying by -1
-1(3x^3             +2)
This is the new problem
   (        -4x^2-2x-1)
+ (-3x^3             -2)

Simplify any terms, then this is the answer
-3x^3-4x^2-2x-3
This is how I got it, but if there are any other answers, feel free to share