<PRE><B>Question 150178</B>
Could you please help me with this problem: 
[[[ (x^-1y^2/x^2y^-2)^4(x^3y^-1/x^-1y^2)^-2 ]]]

= [ (y^4/x^3)^4*{1/(x^4/y^3)^2 ]

= [ (y^16/x^12)*{1/(x^8/y^6) ]

= [ (y^10/x^4) ]

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Cheers,
Stan H.


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