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leduonghung1511


câu 1:[TEX]2x^5+x^3-3x^2+x-1[/TEX] với [TEX]x=1-\sqrt{2}[/TEX]
câu 2: [TEX]\sqrt{x}=3+1[/TEX]
câu 3: [TEX]\frac{2\sqrt{x}+5}{9}[/TEX]=[TEX]2+\frac{\sqrt{x}-3}{6}[/TEX]
câu 2: [TEX]\sqrt{x}=3+1[/TEX]
câu 3: [TEX]\frac{2\sqrt{x}+5}{9}[/TEX]=[TEX]2+\frac{\sqrt{x}-3}{6}[/TEX]
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