Question

pls tell how to solve

Answer 1

[{81)-½}¼]
[{9²)-½}¼]
[{1/9}¼]
[{1/3}²¼]
(1/3)½

Answer 2

{(9^2)-1/2}^1/4
=(9^2*-1/2)^1/4
=(9^-1)^1/4
=3^-2*1/4
=3^-1/2
=1/√3