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Verified answer
Bab Nilai MutlakMatematika SMA Kelas X
|3x - 4| = a
|3x - 4|² - 6|3x - 4| ≤ -8
a² - 6a ≤ -8
a² - 6a + 8 ≤ 0
(a - 2) (a - 4) ≤ 0
a - 2 = 0 atau a - 4 = 0
a = 2 a = 4
2 ≤ x ≤ 4
|3x - 4| = 2
(3x - 4)² = 2²
(3x - 4)² - 2² = 0
(3x - 4 + 2) (3x - 4 - 2) = 0
(3x - 2) (3x - 6) = 0
3x - 2 = 0 atau 3x - 6 = 0
3x = 2 3x = 6
x = 2/3 x = 2
|3x - 4| = 4
(3x - 4)² = 4²
(3x - 4)² - 4² = 0
(3x - 4 + 4) (3x - 4 - 4) = 0
3x (3x - 8) = 0
3x = 0 atau 3x - 8 = 0
x = 0 3x = 8
x = 8/3
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0 2/3 2 8/3
HP = { x | 0 ≤ x ≤ 2/3 atau 2 ≤ x ≤ 8/3, x ∈ bilangan real }