Question

[Duong Thi Nhuong]

Rút gọn : \(\left(\frac{\sqrt{x}-1}{\sqrt{x+1}}+\frac{\sqrt{x}+1}{\sqrt{x-1}}\right).\left(1-\frac{2}{x+1}\right)^2\)

Answer 1

[Trần Thu Uyên]

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