I'm just starting a calculus course and it has been ages since I've done anything algebra-related.

I've ran into some issues and I don't even know where to start. I think it is factoring, but none of the sites have given me enough information on what I need to do.

I am hoping someone could help me out.

So I have this equation (including everything, but I don't think the limit is needed..correct me if I'm wrong).

lim h->3

h^3-27
----------
h-3

Is the equation I'm working with. That is h cubed minus 27 over h minus 3.

Now I've looked at the answer and it has step by step how to get to the answer, but the first step is what has me confused.

My question is how does the above equation turn into:

(h-3)(h^2+3h+9)
-----------------------
h-3

Any information at all would help. Key terms or a site I could review to get the hang of this again would be best.