Simplify the expression: 2(x2−1)−(x2+3x−2)2(x^2 - 1) - (x^2 + 3x - 2)2(x2−1)−(x2+3x−2).
x2−3xx^2 - 3xx2−3x
x2+3x−4x^2 + 3x - 4x2+3x−4
x2−3x−4x^2 - 3x - 4x2−3x−4
x2−3x+4x^2 - 3x + 4x2−3x+4