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Adelya20G
@Adelya20G
July 2022
1
4
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х² +7х+12=0
2х²-5х-3=0
даю 40 баллов)
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1) по т.Виета корни (-3) и (-4)
т.Виета: произведение корней кв.уравнения = (с)
сумма корней кв.уравнения = (-b)
2) D = 25+4*2*3 = 7^2
(x)1;2 = (5 +- 7) / 4
x1 = -2/4 = -1/2
x2 = 12/4 = 3
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Answers & Comments
Verified answer
1) по т.Виета корни (-3) и (-4)т.Виета: произведение корней кв.уравнения = (с)
сумма корней кв.уравнения = (-b)
2) D = 25+4*2*3 = 7^2
(x)1;2 = (5 +- 7) / 4
x1 = -2/4 = -1/2
x2 = 12/4 = 3