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Автор - AngelNar

найдите среднее арифметическое корней уравнения:
х(х-5,2)(3,4+х)(2,4-2х)=0
Ответ:0,75, помогите подобрать решение:)

Ответ

Проверено экспертом

Автор - miron2077
приравниваем каждый сомножитель 0
х₁=0
х₂-5,2=0      х₂=5,2
3,4+х₃=0      х₃=-3,4
2,4-2х₄=0      х₄=1,2
(0+5,2-3,4+1,2):4=3:4=0,75

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