1) Cho $a,b,c> 1$ và $\frac{1}{a}+\frac{1}{b}+\frac{1}{c}=2$.CMR:
$\sqrt{a-1}+\sqrt{b-1}+\sqrt{c-1}\leq \sqrt{a+b+c}$
2) Cho $a,b,c$ là các số thực bất kỳ. CMR: $(a^{2}+1)(b^{2}+1)(c^{2}+1)\geq (ab+bc+ac-1)^{2}$
1) Cho $a,b,c> 1$ và $\frac{1}{a}+\frac{1}{b}+\frac{1}{c}=2$.CMR:
$\sqrt{a-1}+\sqrt{b-1}+\sqrt{c-1}\leq \sqrt{a+b+c}$
2) Cho $a,b,c$ là các số thực bất kỳ. CMR: $(a^{2}+1)(b^{2}+1)(c^{2}+1)\geq (ab+bc+ac-1)^{2}$
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"IF YOU HAVE A DREAM TO CHASE,NOTHING NOTHING CAN STOP YOU"_M10
"IF YOU HAVE A DREAM TO CHASE,NOTHING NOTHING CAN STOP YOU"_M10
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