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	Các bình luận về: Cho các số thực \(x,y,z\) thỏa mãn:



\({\log _{16}}\left( {\frac{{x + y + z}}{{2{x^2} + 2{y^2} + 2{z^2} + 1}}} \right) = x\left( {x &#8211; 2} \right) + y\left( {y &#8211; 2} \right) + z\left( {z &#8211; 2} \right).\)



Giá trị lớn nhất của biểu thức \(F = \frac{{x + y &#8211; z}}{{x + y + z}}\)nằm trong khoảng	</title>
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