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

Toán Lớp 9: rút gọn B = ( x/x-4 – 1/ √x -2 ) : √x/ √x+2

Toán Lớp 9: rút gọn B = ( x/x-4 – 1/ √x -2 ) : √x/ √x+2

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