Do you know why aa positive number is not equal to 0^- # is less that 1, but it is not negative?  For example 5^-2= 1/25. I think this it's basically talking about exponents. Yes, I know it sounds very difficult, but it really isn't.  When you get a negative exponent, you put a one over the oringinal number.
     For example 5^-2= 1/25.  You get this by doing the original problem, so in this case, you multiply 5^2.  Then you put a 1 over your answer which, for this problem, you would get 25.  After placing the one, you get the answer 1/25.  This is because the exponent was negative.



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