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VanLTT

Member Since 01-09-2015
Offline Last Active 21-01-2016 - 23:08

Posted by VanLTT on 28-11-2015 - 15:54

bạn ơi$ AM-GM$ chỉ cho số không âm thôi mà, có gì nhầm lẫn không thế?

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