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222-9+11+12:2*14+14 = ? ( )

Toán Lớp 9: Cho P= $\frac{\sqrt{x} }{\sqrt{x}-1 }$ + $\frac{3}{\sqrt{x}+1 }$ – $\frac{6\sqrt{x}-4 }{x-1}$ a) Rút gọn P b) Tìm x để P < $\frac{1}{

Toán Lớp 9: Cho P= $\frac{\sqrt{x} }{\sqrt{x}-1 }$ + $\frac{3}{\sqrt{x}+1 }$ – $\frac{6\sqrt{x}-4 }{x-1}$
a) Rút gọn P
b) Tìm x để P < $\frac{1}{2}$

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222-9+11+12:2*14+14 = ? ( )