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vuonghongtham07


Giải phương trình
$2x+1-\dfrac{1}{x}=\sqrt{1-\dfrac{1}{x}}+3\sqrt{x-\dfrac{1}{x}}$
$2x+1-\dfrac{1}{x}=\sqrt{1-\dfrac{1}{x}}+3\sqrt{x-\dfrac{1}{x}}$
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