How do you simplify square root of 175 minus square root of 28?
First, simplify each square root:
We could go through the list starting with
We cannot further simplfy
Here's the short way to write what we've done:
# = 5sqrt7-2sqrt7#
Now, if we have 5 of these things and we subtract 2 of the things, surely we end up with 3 of the things.
# = 3sqrt7#