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Ответ

Ответ дан
Murad313

2A

I.Вычисление дискриминанта:

D = b² - 4ac = 3² - 4*2*1 = 9-8 = 1 = 1²


II.Нахождение корней:

x1 = -3+1 / 2*2 = -2 / 4 = -0,5

x2 = -3-1 / 2*2 = -4 / 4 = -1

I.Вычисление дискриминанта:

D = b² - 4ac = (-4)² - 4*1*4 = 16-16 = 0

D = b² - 4ac = (-3)² - 4*5*2 = 9-40 = -31 =  [D<0]

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