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Verified answer
Jawab|3x + 2|² +|3x + 2| - 2 = 0
misalkan | 3x + 2| = a dan syarat a >= 0
a² + a - 2 = 0
(a + 2)(a - 1)= 0
a + 2 = 0 atau a - 1 = 0
a = - 2 (tidak memenuhi syarat ) atau a = 1
yang memenuhi a = 1
|3x + 2| = 1
3x + 2 = 1 atau -(3x +2) = 1
2x = 1 - 2 atau 3x +2 = - 1
2x = - 1 atau 3x = - 3
x = - 1/2 atau x = - 1