1) lim (1/x) - (1/2) / (x-2)

x->2

I know to multiply by (1/x)+(1/2) to both top and bottom but I don't know how...can some help with a step by step how?

2) lim (4+h)^3 - 64 / h

h->0

I tried sum of cubes and got lost haha. I did the steps in that but the 64 is messing me up.

Any help would be great