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X^4 +

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kramacha1979
 Post subject: X^4 +
 Post Posted: Tue Jun 09, 2009 9:15 am 
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Students


Posts: 68
IS X^4 + Y^4 > Z^4

1) X^2 + Y^2 > Z^2
2) X + Y > Z

Help needed on this one.. I tried plugging some numbers and killed BD..

OA : E
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RonPurewal
 Post subject: Re: X^4 +
 Post Posted: Mon Jun 15, 2009 9:47 pm 
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ManhattanGMAT Staff


Posts: 4419
huge thread on this problem here:

is-x-4-y-4-z-4-t4655.html
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