5х² - 22х - 15 = 0
a = 5, b = -22, c = -15
D = 484 + 4•5•15 = 784; √D= 28
x1 = 22+28/5•2 = 5
x2 = 22-28/5•2 = -0,6
Ответ: 5; -0,6
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5х² - 22х - 15 = 0
a = 5, b = -22, c = -15
D = 484 + 4•5•15 = 784; √D= 28
x1 = 22+28/5•2 = 5
x2 = 22-28/5•2 = -0,6
Ответ: 5; -0,6