Hi -2(x+3)^2 +3(x-3)^2 -2[(x+3)(x+3)] +3[(x-3)(x-3)] -2[x^2+ 6x + 9] +3[x^2 - 6x + 9] -2x^2 -12x -18 + 3x^2 - 18x + 27 x^2 -30x + 9