Divide x3+2x2−5x−6x^3 + 2x^2 - 5x - 6x3+2x2−5x−6 by (x+1)(x + 1)(x+1) using polynomial division. What is the quotient?
x2+x−6x^2 + x - 6x2+x−6
x2+3x−6x^2 + 3x - 6x2+3x−6
x2−x−6x^2 - x - 6x2−x−6
x2+2x−6x^2 + 2x - 6x2+2x−6