Автор - dccgh53356

Помогите срочно 10 баллов​

Ответ

Автор - maylytail

 {x}^{2}  - x - 56 geqslant 0 \

За т. Виета:

x1 + x2 =  - b \ x1 times x2 = c \ x1 + x2 =1 \  x1 times x2 =  - 56 \ x1 = 8 \ x2 =  - 7

х ∈ (-∞;-7]∪[8;+∞)

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