Which of these are correct?

5^ 8/5^6 = 25
6^7/ 6^-5 = 36
4^0/ 4^3 = 0
3^ 6/3 ^4 = 1/9
There’s only one answer and only use the answers I provided to you.

The correct statements are:

5^8/5^6 = 25 (correct)
6^7/6^-5 = 36 (correct)
4^0/4^3 = 0 (correct)
3^6/3^4 = 1/9 (correct)