Răspuns :

Panaitadriana55id

Răspuns:

2x+1|50

D50={2,5, 10,25,50}

2x+1=2=>2x=1=>x=1/2 nu convine

2x+1=5=>2x=4=>x=2

2x+1=10=>2x=9=>x=9/2 nu convine

2x+1=25=>2x=24=>x=12

2x+1=50=>2x=49=>x=49/2 nu convine

X={2,12}

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