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chaugaihoangtuxubatu

chaugaihoangtuxubatu

Member Since 12-09-2012
Offline Last Active 24-07-2013 - 21:40
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#363404 $a^4+b^4+2\geq(a+b)^2$

Posted by chaugaihoangtuxubatu on 20-10-2012 - 22:04

Cmr : $a^4+b^4+2\geq(a+b)^2$




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