<PRE><B>Question 79222</B>
[(x^7) (y^-4) (z^0) /(5^-2) (x^3) (y^-8) (z^-9)]^2 
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= [5^2 (x^4) (y^4) (z^9)]^2
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= 625 x^8 y^8 z^18

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Cheers,
Stan H.



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