/ 2\ | 3*x | lim |5 + x - ----| x->-1+\ 8 /
Limit(5 + x - 3*x^2/8, x, -1)
29/8
= 3.625
/ 2\ | 3*x | lim |5 + x - ----| x->-1-\ 8 /
3.625