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tungproqn29
2 năm trước
giải câu b giúp mik thôi cho hàm số y= -x^2 a/ vẽ đồ thị hàm số trên b/ Chứng minh (d): y=mx-2+m luôn cắt (P) tại hai điểm phân biệt với mọi m khác 0
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