SOLUTION: how do you work out 5^-2 ? can you show me a method ?

Question 486581: how do you work out 5^-2 ?
can you show me a method ?

Answer by deborabr(181) (Show Source): You can put this solution on YOUR website!
5^-2=(1/5)^2=(1*1/5*5)=1/25
what i did:
all the numbers raised to negative expoents are transformed in fraction and raised to expoent of the same value but positive now and solve normally. The denominator and numerator are raised by the same expoent. For example:
x^-2 will be (1/x)^2=(1^2/x^2)=(1*1/x*x)

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