-3x^2(x^2 - 2x - 3) + 3x(x^3 - 2x^2 - 5x) + 2x(3-x)= -3x^4 + 6x^3 + 9x^2 + 3x^4 - 6x^3 - 15x^2 +6x - 2x^2=-8x^2 + 6x = 10/9
