p/100·25=32 25p/100=32 p=32·100/25=128 128%-100%=28% cu 28% a crescut alocatia verificare 28/100·25=7 lei 25+7=32 lei 2) (2x-5)(5+2x) ≤ (2x+1)² 10x+4x²-25-10x≤4x²+4x+1 4x²-4x²-4x≤25+1 -4x≤26 ·-1 x≥26/4 x≥13/2 nu are soluti pt.ca apartine multimii nr.rationale Q