/ 2\ lim \-6 - 6*x + 2*x / x->oo
Limit(-6 - 6*x + 2*x^2, x, oo, dir='-')
/ 2\ lim \-6 - 6*x + 2*x / x->2+
-10
= -10.0
/ 2\ lim \-6 - 6*x + 2*x / x->2-
oo
-10.0