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daoanhda112001
2 năm trước
cho đoạn thẳng AB có độ dài 10cm.Các điểm C,D thuộc đường thẳng AB sao CA/CB ,DA/DB=3/2. C nằm trong, D nằm ngoài đoạn thẳng AB. tính khoảng cách từ C và từ B đến D
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