N
nhockthongay_girlkute
x,y,z >0
[TEX] \sum \sqrt{x} =1 [/TEX]
CM
[TEX] \sum \frac{x^2+yz}{\sqrt{2x^2(y+z)}} \geq 1[/TEX]
[TEX] \sum \sqrt{x} =1 [/TEX]
CM
[TEX] \sum \frac{x^2+yz}{\sqrt{2x^2(y+z)}} \geq 1[/TEX]