Question 1179062
{{{b= 2+sqrt( a)/ 2-sqrt( a )}}}

{{{2b-2*sqrt (a) =2 +sqrt( a)}}}
}}}
{{{3*sqrt(a)  = 2b-2

{{{sqrt(a) =(2b-2)/3}}}

{{{a =( (2b-2)/3)^2}}}