Answer:
8
Explanation:
We observe that the logarithm bases are ...
5√5 = √125 . . . . . 125 is the 2nd power of this
2√2 = √8 . . . . . . . 8 is the 2nd power of this; 64 is the 4th power of √8
If we define ...

Then our logarithms are ...

The product of x and y is 8.