Решите уравнения: 1) х^2 - 144 =0 6) х^2 - 8х - 9 =0
2) 4х^2 - 49 = 0 7) 5х^2 + х= 0
3) 4 + х^2 = 0 8) х^2 - 2х – 48 = 0
4) х^2 – 16х + 64 =0 9) 2х^2 + 6х – 8 = 0
5) х^2 - 6х + 5 =0 10) х^2 + 7х + 6 = 0
нужен полный ответ!
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