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- 11 ≤ 2x < - 2
- 11/2 ≤ x < - 1
|x - 4| < 2
kuadratkan:
(x - 4)² < 2²
(x - 4)² - 2² < 0
(x - 4 - 2)(x - 4 + 2) < 0
(x - 6)(x - 2) < 0
2 < x < 6