2. Назвать в квадратном уравнении его коэффициенты: а) 18х2 - 23х – 4 = 0 б) - х2 - 8 = 0
в) - 3х2 - 8,1х = 0 г) – х2 – х – 3 = 0
д) 5х2 - 8х = - 3 е) 1,7 х – 8х2 – 4 = 0
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