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luudanhgiangnam
2 năm trước
cho Pt x^2 - 2(m+1)x +6m - 4 = 0 (1) ,m là tham số. Tìm m để Pt (1) có hai nghiệm x1, x2 thỏa mãn hệ thức ( 2m - 2)x1 +x2^2 - 4x2 = 4
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