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≤ 0
syarat :
(x - 1)(x + 3) > 0 ------> x < - 3 atau x > 1 ----- Hp I
(x + 1)(x - 6) ≤ 0 -------> - 1 ≤ x ≤ 6 ----- Hp II
Hp I Π Hp II : 1 < x ≤ 6
jadi , Hp { 1 < x ≤ 6 ; x ∈ R }