/ 5 2\ lim \1 - 7*x + 2*x + 9*x / x->-1+
Limit(1 - 7*x + 2*x^5 + 9*x^2, x, -1)
15
= 15
/ 5 2\ lim \1 - 7*x + 2*x + 9*x / x->-1-
15.0