Question 744470
{{{2/(2*sqrt(2)-1)}}}



multiply & divide by the conjugate

(2*sqrt(2)+1) 

 {{{(2*(2*sqrt(2)+1))/((2*sqrt(2)-1)(2*sqrt(2)+1))}}} 



{{{(2*(2*sqrt(2)+1))/(8+2sqrt(2)-2sqrt(2)-1)}}} 


{{{(4sqrt(2)+2)/7}}}


{{{(4/7)sqrt(2)+(2/7)}}}