Răspunsuri

2014-06-04T19:19:15+03:00
1+2+3+...........+2014=2014*(2014+1):2=2015*1007=2029105

2014-06-04T19:19:15+03:00
II.2.c.7

4.2^x+2^(x+1)=24
   2^x+2^(x+1)=8+16=2^3+2^4
   x=3