You can
put this solution on YOUR website!well i am sorry..i thought you were telling that you got sqrt.8 as answer and the book gave it as 2sqrt2..and you were worried.but that does not seem to be the case.the answr is basically not correct
let me show you the solution.
Sq Root of (11-x^2) - 2 / sq root of (11-x^2) = 1
Sq Root of (11-x^2) - 2 = sq root of (11-x^2) if this is what you typed ,it has no solution as it leads to -2=0...if the problem is typed wrong please inform.