Toán Lớp 9: [(2 căn x+x)/(x căn x-1)-(1/căn x-1)]/ [(căn x+2)/(x+ căn x+1)] Rút gọn. -

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Toán Lớp 9: [(2 căn x+x)/(x căn x-1)-(1/căn x-1)]/ [(căn x+2)/(x+ căn x+1)] Rút gọn.