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Verified answer
Kelas 10 MatematikaBab Pertidaksamaan Kuadrat
x² + 4x - 12 < 0
(x + 6) (x -2) < 0
x - 2 < 0
x < 2
x + 6 > 0
x > -6
-6 < x
HP = { x | -6 < x < 2, x ∈ bilangan real }