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(X+4) (x-1)X>-4 atay x>1.........
Bahasan : Pertidaksamaan Linear
Jawaban : HP = {x | x < - 4 ∨ x > 1, x ∈ R}
Langkah - langkah :
x² + 3x > 4
⇔ x² + 3x - 4 > 0
Faktorisasi :
(x + 4) (x - 1) > 0
x = - 4 atau x = 1
Garis Bilangan dan Intervalnya :
+++ (- 4) --- (1) +++
Karena diminta x > 0 (positif), maka :
HP = {x | x < - 4 ∨ x > 1, x ∈ R}