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4 pangkat 2 > (|x+2| + |x+1|) pangkat 2
16 > x+2+x+1
16 > 2x + 3
13 > 2x
13/2 > x
(|x+2| + |x+1|) pangkat 2 < 5 pangkat 2
x+2+x+1 < 25
2x + 3 < 25
2x < 23
x < 23/2
jadi himpunan enyelesaiannya adalah ( x < 23/2 dan 13/2 > x )