Nilai x yang mungkin dari persamaan |x+2|=|2x|
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Verified answer
|x+2|=|2x|(x+2)² = (2x)²
x² + 4x + 4 = 4x²
3x² - 4x - 4 = 0
(3x + 2)(x - 2) = 0
⇔ x = -2/3
⇔ x = 2
HP : {-2/3 , 2}