3 2 x - 2*x - 11*x + 12
x^3 - 2*x^2 - 11*x + 12
1*(x + 3)*(x - 1)*(x - 4)
((1*(x + 3))*(x - 1))*(x - 4)
12.0 + x^3 - 2.0*x^2 - 11.0*x
(-1 + x)*(-4 + x)*(3 + x)