Hi (1/3x^2+2/3)(-1/2x+1/2) -1/6x^3 -2/6x + 1/6x^2 + 2/6 -1/6x^3 + 1/6x^2 -2/6x + 2/6 -1/6(x^3 - x^2 + 2x - 2) -1/6(x-1)(x^2+ 2)