2 x + 5*x - 14 ------------- 2 x - 4*x + 4
(-14.0 + x^2 + 5.0*x)/(4.0 + x^2 - 4.0*x)
-14 + x*(5 + x) --------------- 4 + x*(-4 + x)
7 + x ------ -2 + x
9 1 + ------ -2 + x