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Va rog ajutir ||2x+1|-5|=9

Răspuns :

1. l2x+1l-5=9
l2x+1l=14=>a)2x+1=14
2x=13 F
b)2x+1=-14
2x=-15 F
2.l2x+1l-5=-9
l2x+1l=-4 F
Problema nu are solutii.x apartine multimii vide