3 2 x - 2*x + 3 ------------- 2 x + 1
(3.0 + x^3 - 2.0*x^2)/(1.0 + x^2)
2 3 + x *(-2 + x) --------------- 2 1 + x
-5 + x -2 + x - ------ 2 1 + x
/ 2 \ (1 + x)*\3 + x - 3*x/ ---------------------- 2 1 + x