" 23."sqrt((a-x)/(a+x))

(sqrt(a+x)-sqrt(a-x))/(sqrt(a+x)+sqrt(a-x))=(x)/(a)

(sqrt(a+x)+sqrt(a-x))/(sqrt(a+x)-sqrt(a-x))=b

sqrt((20+x)/(x))*sqrt((20-x)/(x))=sqrt(6)

Find x : ( sqrt(x) + sqrt(a) ) / ( sqrt(x) - sqrt(a) ) + ( sqrt(x) - sqrt(a) ) / ( sqrt(x) + sqrt(a) ) = 6

Simplify : ( sqrt( a + x ) - sqrt( a - x ) ) /( sqrt( a + x ) + sqrt( a - x ) )

x^(x sqrt(x))=(x sqrt(x))^(x), then x is equal to

int((sqrt(x)+1)(x^(2)-sqrt(x)))/(x sqrt(x)+x+sqrt(x))dx

The value of lim_(x->oo)(x/(x+(sqrt(x))/(x+(sqrt(x))/(x+(sqrt(x))/(x+(sqrt(x))/(x+......oo)))))) is

log_sqrt(x) (sqrt(x sqrt(x sqrt(x sqrt(x))))) = ?