Question 63417
{{{9*sqrt(8)-sqrt(72)+sqrt(98)}}}
{{{9*sqrt(4*2)-sqrt(36*2)+sqrt(49*2)}}}
Using the idea {{{sqrt(4*2)=sqrt(4)*sqrt(2)=2*sqrt(2)}}} this can now be simplified
{{{9*2*sqrt(2)-6*sqrt(2)+7*sqrt(2)}}}
{{{18*sqrt(2)-6*sqrt(2)+7*sqrt(2)}}}
{{{19*sqrt(2)}}}