Simphfy ,using absolute rule

Question

Simphfy

Answer 1

A)

4√(x^2-4)^4 =[(x^2-4)^4]^1/4

                 =[(x^2-4)]

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B)

5√(-5)^5 =[(-5)^5]^1/5

                 =-5

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C)

√25(x-y)^2 =[(5)^2(x-y)^2]^1/2

                 =5(x-y)

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d)

-3√x^3 =-[x^3]^1/3

                 =-x