2x^2 + x - 2x - 1 - 3x^2 + x + 2 =
-Simplify by combining like terms:
-2x^2 - 2x^2 + x - 2x + x + 2 - 1 =
-4x^2 - 3x + 1
2x^2 + x - 2x - 1 - 3x^2 + x + 2 =
-Simplify by combining like terms:
-2x^2 - 2x^2 + x - 2x + x + 2 - 1 =
-4x^2 - 3x + 1