5 4
(x + 3) - 3*x*(x + 1)
-----------------------
4
x + 7 ((3.0 + x)^5 - 3.0*x*(1.0 + x)^4)/(7.0 + x^4)
3 2
222 + 72*x + 258*x + 416*x
3 - 2*x + ----------------------------
4
7 + x / 2 3 4 5\
-\-243 - 402*x - 258*x - 72*x - 3*x + 2*x /
-----------------------------------------------
4
7 + x