Hi I started limits today and I'm having trouble with two problems. Any help would be appreciated.

The first problem is

lim = -2x - 4 / x^3 + 2x^2

x->-2

The 2nd problem is

lim = x^4 - 1 / x^3 - 1

x->1

Thanks guys. These two problems have been killing me for the last two hours. =(