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Kimthoa
2 năm trước
Bài 3: Cho phương trình (m +1)x2 – 2(m-1)x + m-2 =0 a) Giải phương trình khi m = 0; b) Xác định m để phương trình vô nghiệm; c) Xác định m để phương trình có hai nghiệm phân biệt; d) Xác định m để phương trình có nghiệm kép; e) Xác định m để phương trình có một nghiệm bằng 2. Tính nghiệm kia.
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