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anhhalulove
2 năm trước
GIÚP MÌNH VỚI MÌNH ĐANG CẦN GẤP !!! (Làm rõ giúp mình ạ) Cho hàm số y = - x ^ 2 - 2x + 1(P) a) Lập bảng biến thiên và vẽ đồ thị hàm số (P) b) Dựa vào đô thị hảm số (P) hãy biện luận theo m số nghiệm của phương trình: x ^ 2 + 2x - m = 0
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