Cho $a,b,c>0$ sao cho $a+b+c=4$
Chứng Minh :
$\sqrt{a+b}+\sqrt{b+c}+\sqrt{a+c}> 4$
Edited by Mikhail Leptchinski, 23-11-2014 - 22:48.
Cho $a,b,c>0$ sao cho $a+b+c=4$
Chứng Minh :
$\sqrt{a+b}+\sqrt{b+c}+\sqrt{a+c}> 4$
Edited by Mikhail Leptchinski, 23-11-2014 - 22:48.
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