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thanhtam9898


1) [TEX]\sqrt{x-4}=\sqrt{2x-3}+x-1[/TEX]
2)[TEX] (x-1)\sqrt{x+1}+\sqrt{2x+1}=\sqrt{x+2}[/TEX]
3)[TEX] \sqrt{x+3}+\sqrt{x+\sqrt{x+8}} =4[/TEX]
2)[TEX] (x-1)\sqrt{x+1}+\sqrt{2x+1}=\sqrt{x+2}[/TEX]
3)[TEX] \sqrt{x+3}+\sqrt{x+\sqrt{x+8}} =4[/TEX]