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Nguyenduchien2k18
2 năm trước
1. Trong mặt phẳng tọa độ Oxy cho đường thẳng (d): 2x-y-6=0 và điểm A(-2;0) . Tìm tọa độ điểm H là hình chiếu của A lên (d) và tính khoảng cách từ A đến (d)
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