Divide x3+2x2−x−2x^3 + 2x^2 - x - 2x3+2x2−x−2 by x−1x - 1x−1 using synthetic division. What is the quotient?
x2+3x+2x^2 + 3x + 2x2+3x+2
x2−3x−2x^2 - 3x - 2x2−3x−2
x2+x−2x^2 + x - 2x2+x−2
x2+3x−2x^2 + 3x - 2x2+3x−2