3 x + 1 ------ x + 2
(x^3 + 1)/(x + 2)
4 + x^2 - 7/(2 + x) - 2*x
2 7 4 + x - ----- - 2*x 2 + x
(1.0 + x^3)/(2.0 + x)
/ 2 \ (1 + x)*\1 + x - x/ -------------------- 2 + x
(1 + x)*(1 + x^2 - x)/(2 + x)