Question 35436
I'm not sure how you were supposed to do this, but here is the easy way.  Because the square roots are perfect squares, you can simplify each one of them!!


{{{ (3 - sqrt(4)) *(3 + sqrt(4)) }}}
{{{ (3-2) *(3+2)}}}
{{{ 1*5}}}
{{{5}}}


If you need to FOIL these out, I have a great lesson plan on FOILING expressions with square roots--in color too.


R^2 at SCC