September 2021 0 7 Report
Решите уравнения: (x − 1)(x − 2) + (x + 3)(x − 3) + Зx + 18 = 0
(Зx − 5)2 − 5(5 − 6x) = 0
(x − 7)2 + 7(2x − 14) = 0
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