SOLUTION: Been trying this for a while. Simplify and evaluate. (x^7y^-4z^0/5^-2x^3y^-8z^-9)^2

Question 82365: Been trying this for a while.
Simplify and evaluate.
(x^7y^-4z^0/5^-2x^3y^-8z^-9)^2
Answer by ankor@dixie-net.com(22740) (Show Source): You can put this solution on YOUR website!

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Any number with a 0 exponent is 1, so we have:

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Combine like terms in the numerator, follow the rules of exponents:

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Square each term:

:
I have confidence in the method, however, a lot of chance for error here.
I advise you to do it yourself to confirm my solution
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