3. Назвать в квадратном уравнении его коэффициенты:

а) 3х2 - 8х + 4 = 0 б) -5х2 - 9,4х = 0

в) 13х2 - х = 5 г) -1,3х2 – 8 = 0

д) 2х - 13х2 + 9 = 0 е) х2 – х + 5 = -0​
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