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dieumay16
2 năm trước
Cho phương trình: x² - (2m - 1)x + m - 3 = 0. a. Tìm m để pt có 2 nghiệm thỏa mãn `2x_(1) + 3x_(2) = 13` b. Với trường hợp pt trên có 2 nghiệm `x_(1), x_(2)`. Tìm hệ thức liên hệ giữa `x_(1)` và `x_(2)` mà không phụ thuộc vào m.
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