Himpunan pertidaksamaan nilai mutlak dari
|x+1|^2 + 2 |x+2| > 2
dan
| |x|+3x | < 2
|x+1|^2 + 2 |x+2| > 2
dan
| |x|+3x | < 2
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x<-5 atau x>-1
no 2
x<1/2 atau x >-1