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Verified answer
Mapel : MatematikaKelas : X SMA
Bab : Pertidaksamaan Pecahan
Pembahasan :
(x² - x - 12)/(x - 2) < 2
(x² - x - 12)/(x - 2) - 2 < 0
(x² - 3x - 8)/(x - 2) < 0
Buat pembuat nol
x² - 3x - 8 = 0
pakai rumus ABC, didapat :
X = (3 + √41)/2
X = (3 - √41)/2
x - 2 ≠ 0
x ≠ 2
Uji titik x = 0
(x² - 3x - 8)/(x - 2)
= (0² - 3.0 -8)/(0 - 2)
= 4 ——» Positif
Maka....
Hp : {x| x < (3 - √41)/2 atau 2 < x < (3 + √41)/2, x € R}