Toán Lớp 9: Rút gọn:1)A=Căn32+Căn50-2Căn8+Căn18
2)B=(4x-5)×Căn4/(5x-4)^2 với x bé hơn 5/4
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Toán Lớp 9: Rút gọn:1)A=Căn32+Căn50-2Căn8+Căn18
2)B=(4x-5)×Căn4/(5x-4)^2 với x bé hơn 5/4
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