Question

What is the GCF of `16a^2` and `30a^2`?

Answer 1

`2a^2`

Explanation:

You first factorize both expressions:
`16a^2=2*2*2*2*a*a`
`30a^2=2*3*5*a*a`

If you take the common factors, you will see that the GCF will be:
`2*a*a=2a^2`

Of course, in this case it could have been done faster, but the way I described the steps will work in all cases.