Question 83443
First of all, you have a large number inside the radical that needs to be broken down.  Notice that 567 is divisible by 9, and that it is actually 9*63.  This means that it can be written as 9*9*7.  


Here is your problem:

{{{ (18+sqrt(567))/9}}}
{{{ (18+sqrt(81)*sqrt(7))/9}}}
{{{ (18+9*sqrt(7))/9}}}


Factor the numerator:

{{{ (9(2+sqrt(7)))/9}}}


Divide out the 9:
{{{2 + sqrt(7) }}}


R^2 at SCC