How do you multiply a negative exponent?

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I'm very confused on this and would like some help.

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Answer 1 · 2018-04-24T00:36:21

See explanation

Negative exponent #x^-a# can also be written as #1/x^a#
So if you had #z*x^-a# then you rewrite it as #z*1/x^a=z/x^a#