1. Решите уравнение :
а) 0.1x^2 + 10 = 0
б) 7а - 14а^2 = 0
в) 2y^2 - 9y + 10 = 0
2. Разложите трёхчлен на множители:
а) -y + 14y + 51
б)5x^2 - 11x +2

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