himpunan penyelesaian dari |x-2|+|x+4|=8

(x-2) + (x+4) = 8
x² + 4x - 2x - 8 = 8
x² + 2x - 8 - 8 = 0
x² + 2x - 16 = 0
jawaban : x² + 2x - 16 = 0

(x - 2) + (x + 4) = 8.
2x = 8 + 2 - 4.
2x = 6.
x = 6/2.
x = 3.

HP : {3}.