4 3 7*x - 2*x + 2 --------------- 4 x + 3
(2.0 + 7.0*x^4 - 2.0*x^3)/(3.0 + x^4)
3 2 + x *(-2 + 7*x) ----------------- 4 3 + x
3 19 + 2*x 7 - --------- 4 3 + x