(49.0 + 2.0*x)/(7.0 - x)^4 + (x^2 - 16.0*x)/(-7.0 + x)^4
4 4 / 2 \ (-7 + x) *(49 + 2*x) + (7 - x) *\x - 16*x/ ------------------------------------------- 4 4 (-7 + x) *(7 - x)
4 4 (-7 + x) *(49 + 2*x) + x*(7 - x) *(-16 + x) ------------------------------------------- 4 4 (-7 + x) *(7 - x)