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# HARD PS GMAT PREP

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06 Aug 2006, 14:34
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Helppp
Totally lost on how to solve the problem
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06 Aug 2006, 17:06
Try plugging numbers x=1 and y=1 and you will see that only II is true

Another way is square all expressions and go from there. It also leads to II, but it could take longer, IMO
06 Aug 2006, 17:06
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