Răspunsuri

2014-10-27T09:26:16+02:00
(2 la puterea 2 )  + (2 la puterea 1 )  + (2 la puterea 0 ) =4+2+1=7
2² +2¹+2°=4+2+1=7
2014-10-27T09:26:50+02:00
-2^2 :(+2^2) +2^2= -8:+8+8=-1+8=7