Algebra Please Help

I have been out of school for a long time and not understanding these questions. Please help

why is 5^0=1

can you explain when (-3)^n is positive and when it is negative.

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  1. By definition, anything to the zero power is 1.

    any real number taken to a positive power is positive.

    Any negative number taken to even power is positive, if taken to a negative power, it is negative.

    (-3)^2= +9
    (-3)^3=-27

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    bobpursley

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