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tienqm123


1, a,b,c > 0 thỏa mãn [TEX]\frac{1}{a}[/TEX] + [TEX]\frac{1}{b}[/TEX] + [TEX]\frac{1}{c}[/TEX] = 1
CMR: [TEX]\sqrt{a - 1}[/TEX] + [TEX]\sqrt{b - 1}[/TEX] + [TEX]\sqrt{c - 1}[/TEX] >= 3[TEX]\sqrt{2}[/TEX]
CMR: [TEX]\sqrt{a - 1}[/TEX] + [TEX]\sqrt{b - 1}[/TEX] + [TEX]\sqrt{c - 1}[/TEX] >= 3[TEX]\sqrt{2}[/TEX]
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