2,5х² + 2х - 0,5 = 4
D = 4 - 4×2,5×(-0,5) = 4 + 5 = 9>0
x1 = -2+3 / 5 = 1/5 = 0,2
x2 = -2-3 / 5 = -5/5 = -1
Ответ: 0,2; -1.
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2,5х² + 2х - 0,5 = 4
D = 4 - 4×2,5×(-0,5) = 4 + 5 = 9>0
x1 = -2+3 / 5 = 1/5 = 0,2
x2 = -2-3 / 5 = -5/5 = -1
Ответ: 0,2; -1.