2 x - 3*x + 2
x^2 - 3*x + 2
2 2 + x - 3*x
2 + x^2 - 3*x
(x - 1)*(x - 2)
2 + x*(-3 + x)
2.0 + x^2 - 3.0*x
(-1 + x)*(-2 + x)