Question

im completly lost in understanding radical expressions?

Answer 1

This looks like a really nice tutorial:
http://www.mathportal.org/algebra/roots-and-radicals/simplifying-radical-expressions.php

Here's another one:
http://www.purplemath.com/modules/radicals.htm

I'd suggest you go through those and try your problems, and if you are still struggling, come post some specific question here and we can certainly help you! :)

Answer 2

Thank you