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sumichu2505
2 năm trước
Tìm m để PT $x^{2}$ - 2(m - 1)x + $m^{2}$ - 3m + 4 có hai nghiệm $x_{1}$, $x_{2}$ thỏa mãn $\sqrt{x_1}$ + $\sqrt{x_2}$ = 2$\sqrt{2}$
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