5 x + 15 -------- + ------- 2 2 x + 5*x 25 - x
5.0/(x^2 + 5.0*x) + (15.0 + x)/(25.0 - x^2)
2 / 2 \ 125 - 5*x + (15 + x)*\x + 5*x/ -------------------------------- / 2\ / 2 \ \25 - x /*\x + 5*x/
2 125 - 5*x + x*(5 + x)*(15 + x) ------------------------------- / 2\ x*(5 + x)*\25 - x /
-(5 + x) ---------- x*(-5 + x)
-(5 + x) --------- 2 x - 5*x