Answer:
Step-by-step explanation:
Factor 15^5: 5^5 x 3^3
[tex]\frac{5^5*3^5}{-5^-6} = 5^1^1\\ \\ \frac{5^1^1*3^5}{-1} =-5^1^1*3^5\\ \\ =-11865234375[/tex]
Either: -5^11(3^5) or -11865234375
(depending on how you're supposed to write it)
I think at least