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CMR: $\sum (\frac{x+2011}{y-z})^2 \geq 2$


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hoangmanhquan

hoangmanhquan

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Cho các số thực $x,y,z$

CMR:

$(\frac{x+2011}{y-z})^2+(\frac{y+2011}{z-x})^2+(\frac{z+2011}{x-y})^2\geq 2$


Edited by hoangmanhquan, 14-03-2015 - 20:25.

:icon1: Sống là cho, đâu chỉ nhận riêng mình :icon1: 

 

 





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