What is the simplest radical form of 120?

You may factorise the number and see if there are any squares that you can take out of the root.

If you work this out, you will find that ##120=2*2*2*3*5##

You can take two of the ##2##'s out: ##=2sqrt(2*3*5)=2sqrt30##

Or make it like:

##2*sqrt2*sqrt3*sqrt5##