Question

Write equivalent expression using exponents

Answer 1

The square root of x^4 is x^2. The square root of that is x.

Answer 2

@futrchamp I square it twice?

Answer 3

\[\sqrt{\sqrt{x^4}} = \sqrt{(x^4)^{1/2}} = [(x^4)^{1/2}]^{1/2} = (x^4)^{1/4} = x\]
in case you're interested to see the pattern