Question

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Answer 1

Taking square root is equivalent to raising it to the power of 1/2.
\[\large
5 \sqrt{x^4} = 5(x^4)^{1/2} = 5(x^{4*1/2}) = 5x^2
\]

Answer 2

Aha! It is the fifth root!

Answer 3

Taking the fifth root is equivalent to raising it to the power 1/5. \[\large \sqrt[5]{x^4} = x^{4/5}\]

Answer 4

ohh okay thank you so much haha :-)