2 6*x + x --------------- 2 6*x - 17*x - 3
(x + 6.0*x^2)/(-3.0 + 6.0*x^2 - 17.0*x)
x*(1 + 6*x) ------------------ -3 + x*(-17 + 6*x)
x ------ -3 + x
3 1 + ------ -3 + x