Simplify 3x(x−2)−2(x2−4x+3)3x(x - 2) - 2(x^2 - 4x + 3)3x(x−2)−2(x2−4x+3).
x2−14x+6x^2 - 14x + 6x2−14x+6
x2+2x+6x^2 + 2x + 6x2+2x+6
x2−2x−6x^2 - 2x - 6x2−2x−6
x2+2x−6x^2 + 2x - 6x2+2x−6