The expression is .

Method 1:-

For any real number b and for any power of negative integer n, .

For any real number b and for any positive integer n, .

                             (Rewrite: )

Apply product property of radicals: .

Method 2:-

For any real number b and for any power of negative integer n, .

                     (Rewrite: )

                   (Apply Power of a power property: )

                         (Cancel common terms)

The value of the is .