/ 2\ | 3 5*x | lim |2 - x + 2*x - ----| x->4+\ 2 /
Limit(2 - x + 2*x^3 - 5*x^2/2, x, 4)
86
= 86
/ 2\ | 3 5*x | lim |2 - x + 2*x - ----| x->4-\ 2 /
86.0