Question 215541
{{{7*sqrt(2) - 2*sqrt(27)}}} not a lot you can do
{{{7*sqrt(2) - 2*sqrt(9*3)}}} 
{{{7*sqrt(2) - 2*sqrt(9)*sqrt(3)}}} 
{{{7*sqrt(2) - 2*3*sqrt(3)}}} 
{{{7*sqrt(2) -6*sqrt(3)}}}