Уравнение, имеющее один корень, —
1)
[tex] - 2 {x}^{2} - x + 1 = 0[/tex]
2)
[tex]2 {x}^{2} - x + 1 = 0[/tex]
3)
[tex] - {x}^{2} + 2x - 1 = 0[/tex]
1)
[tex] - 2 {x}^{2} - x + 1 = 0[/tex]
2)
[tex]2 {x}^{2} - x + 1 = 0[/tex]
3)
[tex] - {x}^{2} + 2x - 1 = 0[/tex]
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