2 2*x - 5*x - 3 -------------- 2 x + x - 6
(-3.0 + 2.0*x^2 - 5.0*x)/(-6.0 + x + x^2)
-3 + x*(-5 + 2*x) ----------------- -6 + x*(1 + x)
(1 + 2*x)*(-3 + x) ------------------ (-2 + x)*(3 + x)
-9 + 7*x 2 - ----------- 2 -6 + x + x