6 4 x + x - 8 ----------- 3 x - 4*x
(-8.0 + x^4 + x^6)/(x^3 - 4.0*x)
4 / 2\ -8 + x *\1 + x / ---------------- / 2\ x*\-4 + x /
4 6 -8 + x + x ------------ / 2\ x*\-4 + x /
4 6 -8 + x + x ------------------ x*(-2 + x)*(2 + x)
2 3 -8 + 20*x x + 5*x + ---------- 3 x - 4*x