I know for example (x^2-16) = (x+4) (x-4) but what about something like (x^3-64)? I can't find the rule to solve something like this. I think it involves 3 terms but I can't figure it out.
Be grateful that the problem is as simple as $\displaystyle x^3 = 64$ (meaning no terms that are of the second or first degree in this equation).
You can't simplify this type of problem further and you'll have to know from memory or a table that $\displaystyle 4^3 = 64$.