The product of the square root of x with the cube root of x is

3

If 10^2y = 25, then 10^-y equals

4

The value of x-y^x-y when x = 2 and y = -2 is

6

If 9^x+2 = 240 + 9^x, then x =

7

The seventh root of x divided by the eighth root of x is