2 x - 3*x + 2 ------------ x - 1
(x^2 - 3*x + 2)/(x - 1)
-2 + x
(2.0 + x^2 - 3.0*x)/(-1.0 + x)
2 2 + x - 3*x ------------ -1 + x
(2 + x^2 - 3*x)/(-1 + x)
2 + x*(-3 + x) -------------- -1 + x
(2 + x*(-3 + x))/(-1 + x)