/ 2 \ lim \-8 + x + 6*x/ x->oo
Limit(-8 + x^2 + 6*x, x, oo, dir='-')
oo
/ 2 \ lim \-8 + x + 6*x/ x->-1+
-13
= -13.0
/ 2 \ lim \-8 + x + 6*x/ x->-1-
-13.0