Răspunsuri

2014-10-27T14:19:26+02:00
Swe cauta divizorii lui 18={-1,-2,-3,-6,-9,-18 ,18,9,6,,3,2,1]2n+1=1 ,n=02n+1=2 ,∉N2n+1=3,n=12n+1=6∉N2n+1=9,n=42n+1=18∉Nn={0,1,4}