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x² - x - 12 > 0
( x - 4 )( x + 3 ) > 0
x₂ = 4 ∨ x₁ = -3
karena tanda nya ">" maka, jawabannya x < -3 ∨ x > 4
(x-4)(x+3)>0
x=4 atau x=-3
masukan garis selidik
+ - +
-3 4
Hp ={x<-3 atau x>4}