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anhhi
2 năm trước
Cho 3 đt có pt Đenta1 : x+y+3=0 Đenta2: x-y-4=0 Đenta3: x-2y=0 Tìm tọa độ điểm M nằm trên đenta3 sao cho k/c từ M đến đenta1 bằng 2 lần k/c từ M đến đenta2
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