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Автор - anastasialf

КОМУ НЕ ТРУДНО ПОМОГИТЕ РЕБЯТ)

Ответ

Автор - Georgyi
 frac{x^2-7x-30}{x-20}  geq 0 разложим числитель на множители
 frac{(x+3)(x-10)}{x-20}  geq 0 далее методом интервалов найдем множество значений x.

Ответ: x=[-3;10]U(20;+∞).

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