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	Các bình luận về: Đề bài: Chứng minh rằng với mọi $a,b\in R$ luôn có:$\frac{a+b}{2}\times \frac{a^2+b^2}{2}\times \frac{a^3+b^3}{2}\leq \frac{a^6+b^6}{2}$	</title>
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