Hello Everyone,

I'm returning to school after a long time off, and I know this is a pretty basic question, but I can't seem to get it.

The problem is pretty simple:

Factor Completely

125-27u^3

Now I know that the cube of 125 is 5 and the cube of 27 is 3, and I'm sure that ties into here since it sounds like I need to find the GCF twice and make three parentheticals. I can't seem to make this work however, and I'm feeling foolish.

Many Thanks!