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Verified answer
1.]Titik Kritis
x = 0 , x = 1 , x = 2
Maka HP :
{x | 0 < x < 1 atau x > 2 , x ∈ R}
2.]
Misal |2x - 3| = a
a² - a ≥ 20
a² - a - 20 ≥ 0
(a - 5)(a + 4) ≥ 0
a = -4 (tidak memenuhi) atau a = 5
|2x - 3| = 5
2x - 3 = 5 atau 2x - 3 = -5
2x = 8 atau 2x = -2
x = 4 atau x = -1
HP : {-1 , 4}