SOLUTION: how do negative exponents work?

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Question 240966: how do negative exponents work?
Answer by checkley77(12844) About Me  (Show Source):
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IF THE NEGATIVE EXPONENT IS IN THE NUMERATOR OR A SINGLE NUMBER, CHANGE THE NEGATIVE EXPONENT TO A POSITIVE EXPONENT & PLACE IT IN THE DENOMINATOR.
5^-2=1/5^2=1/25
IF THE NEGATIVE EXPONENT IS IN THE DENOMINATOR, CHANGE THE NEGATIVE EXPONENT TO A POSITIVE EXPONENT & PLACE IT IN THE NUMERATOR.
1/(3^-3)=3^3=27 ANS.
4^-2/2^-2=2^2/4^2=4/16=1/4 ANS.