2.0/(8.0 + x) + x^3/(-64.0 + x^2) - x/(-8.0 + x)
/ 3 / 2\\ / 2\ (8 + x)*\x *(-8 + x) - x*\-64 + x // + 2*\-64 + x /*(-8 + x) ------------------------------------------------------------ / 2\ \-64 + x /*(-8 + x)*(8 + x)
/ 2\ / 2 2 \ 2*\-64 + x /*(-8 + x) + x*(8 + x)*\64 - x + x *(-8 + x)/ --------------------------------------------------------- / 2\ \-64 + x /*(-8 + x)*(8 + x)