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iquynh


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