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vanxinhxinh1926
2 năm trước
1.Cho tam giác ABC với A ( -5 ; 6 ) ; B ( 3 ; 2 ) ; C ( 0 ; -4 ) . Chân đường phân giác trong góc A có toạ độ 2. Tìm m để giao điểm 2 đường thẳng ( d1 ) : y = 2x + 3m ; ( d2 ) : y - x + 3 nằm trên đường thẳng y = -2
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