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Chứng minh rằng:$8^x+8^y+8^z\geq 4^{x+1}+4^{y+1}+4^{z+1}$


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#1
doraemon123

doraemon123

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Cho x,y,z  là các số thực dương thõa mãn: x+y+z=1.

Chứng minh rằng:      $8^x+8^y+8^z\geq 4^{x+1}+4^{y+1}+4^{z+1}$


Edited by doraemon123, 09-03-2018 - 15:10.

$\sqrt{MF}$  math is like reality that so many problem to solve $\sqrt{MATH}$

                                               (~~) (~~) :ukliam2: :ukliam2: :ukliam2: :ukliam2:  (~~) (~~) 


#2
doraemon123

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$\sqrt{MF}$  math is like reality that so many problem to solve $\sqrt{MATH}$

                                               (~~) (~~) :ukliam2: :ukliam2: :ukliam2: :ukliam2:  (~~) (~~) 





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