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Guest Viewing Topic:   Chứng minh:$\sum \frac{a^2}{b+c+d} \geq \frac{5}{3}$ 22-05-2024 - 05:05 No options available
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Guest Viewing Topic:   Tìm GTNN của $P=\frac{1}{a}+\frac{2}{b}+\frac{3}{c}$ 22-05-2024 - 05:05 No options available
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