Tolong dijawab beserta langkah langkah nya
|3x – 6| – |x + 2| = 0
|(x + 7)/(2x – 1)| = 2
Nilai Mutlak
•
|3x – 6| – |x + 2| = 0
|3x – 6| = |x + 2|
(3x – 6 + x + 2)(3x – 6 – x – 2) = 0
(4x – 4)(2x – 8) = 0
x = 1 atau x = 4
HP = {1 , 4}
••
|(x + 7)/(2x – 1)| = 2
•
x + 7 = 2(2x – 1)
x – 4x = -2 – 7
-3x = -9
x = 3
•
x + 7 = -2(2x – 1)
x + 4x = 2 – 7
5x = -5
x = -1
HP = {-1 , 3}
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