Помогите 2номер 1))))))))

Question

Помогите 2номер 1))))))))

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Answer 1

.........................

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Answer 2

X² - 49 > 0
(x - 7)(x + 7) > 0
     +                    -                     +
_____________________________
            - 7                        7
x ∈ (- ∞ ; - 7)∪(7 ; + ∞)