SOLUTION: 9x^-6xy +y^-81 factored--how to simplify

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Question 326301: 9x^-6xy +y^-81 factored--how to simplify
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
9x%5E%28-6xy%29+%2By%5E%28-81%29
Any hints as to what you're looking for in terms of simplification??