2 2*x - 11*x + 5 --------------- 2 4*x - 1
(5.0 + 2.0*x^2 - 11.0*x)/(-1.0 + 4.0*x^2)
5 + x*(-11 + 2*x) ----------------- 2 -1 + 4*x
-5 + x ------- 1 + 2*x
1 11 - - ------- 2 2 + 4*x