Simplify [{(625)^-1/2}^-1/4]².

5

For any positive real number x, find the value of

6

Write the value of {5(8^1/3 + 27^1/3)³}^1/4

5

For any positive real number x, write the value of

9

If (x-1)³ = 8, what is the value of (x+1)²