TRY IT:

Factor

Factor

The thing to remember on these is that, for something to be factored out, it has to be in EVERY term.

Here's something messier:

What can we factor out of this?

Look at the numbers (coefficients) first:

a 2 comes out

Now, look at the x's:

They all have one x... So, an x comes out.

Finally, the y's:

They all have a