x² - 1 > 0
(x - 1)(x + 1) > 0
+ - +
________₀________₀________
- 1 1
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x ∈ ( - ∞ ; - 1) ∪ (1 ; + ∞)
12/х = -12/5 - 25/5
12/х = -37/5
Х= - (12×5)/37
Х=-60/37
4 , 8, 12, 16 , 20, 24.
4 * n
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