Toán Lớp 9: Cho A = ( $\frac{ √x + 2}{x – 1}$ – $\frac{√x – 2}{x – 2 √x + 1}$ ) : $\frac{4x}{ (x – 1) ²}$
a, Rút gọn P
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Toán Lớp 9: Cho A = ( $\frac{ √x + 2}{x – 1}$ – $\frac{√x – 2}{x – 2 √x + 1}$ ) : $\frac{4x}{ (x – 1) ²}$
a, Rút gọn P
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