(9*x^3-6*x^2-5*x+2)/(3x-1)
=((9*x^3-3*x^2)-(3*x^2-x)-(6*x-2))/(3x-1)
=(3*x^2*(3x-1)-x*(3*x-1)-2(3*x-1))/(3x-1)
=3*x^2-x-2