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Bab Pertidaksamaan KuadratMatematika SMA Kelas X
x² + 4x - 5 ≤ 0
(x + 5) (x - 1) ≤ 0
x + 5 = 0 atau x - 1 = 0
x = -5 x = 1
-5 ≤ x ≤ 1
HP = { x | -5 ≤ x ≤ 1, x ∈ bilangan real }
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Semoga terbantu yahh..