Question

If+√x=+√(11-6√2),+then+1/√x+=?

Answer 1

Sol.√x=√(11-6√2) , 1/√x=1/√(11-6√2)

rationalisation of denominator

=> 1/√(11-6√2)×√(11+6√2)/√(11+6√2)

=>√(11+6√2)/√121-72

=>√(11+6√2)/√49

»√(11+6√2)/7 Ans