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titto200356
2 năm trước
Cho phương trình ẩn x: x 2 – mx + m- 2 = 0 a) Giải phương trình với m =5 b) Tìm m để các nghiệm x 1 , x 2 thỏa mãn x 1 2 + x 2 2 nhỏ nhất.
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