Какие из чисел -3, -2, 0, 1 являются корнями уравнения?
1) x2 - 9 = 0;
2) x2 - x = 0;
3) x2 + x - 6 = 0;
4) x2 - 5x + 4 = 0;
5) (x - 1)(x + 2) = 0;
6) (x + 1)(x - 3) = x.​
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