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Verified answer
Kelas 10 MatematikaBab Pertidaksamaan Kuadrat
x² - 11x - 12 > 0
(x - 12) (x + 1) > 0
x - 12 > 0
x > 12
x + 1 < 0
x < -1
HP = { x | x < -1 atau x > 12, x ∈ bilangan real }