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Verified answer
Mapel : MatematikaKelas : X SMA
Bab : Mutlak
Pembahasan :
|2x - 5| = |x + 1|
(2x - 5)² = (x + 1)²
(2x - 5)² - (x + 1)² = 0
(2x - 5 + x + 1)(2x - 5 - x - 1) = 0
(3x - 4)(x - 6) = 0
x = 4/3
x = 6
Hp : {4/3 , 6}
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3|x - 1| - 2|x + 1| = 0
3|x - 1| = 2|x + 1|
(3x - 3)² = (2x + 2)²
(3x - 3)² - (2x + 2)² = 0
(3x - 3 + 2x + 2)(3x - 3 - 2x - 2) = 0
(5x - 1)(x - 5) = 0
x = 1/5
x = 5
Hp : {1/5 , 5}