Răspunsuri

2014-11-03T12:00:04+02:00
N+2=2+2+2^2+2^3+....+2^2007=
= 2^2+2^2+2^3+...+2^2007=
=2^3+2^3+....+2^2007
=2^4+2^4+.....+2^2007=
.......................................
=2^2006+2^2006+2^2007=
=2^2007+2^2007=
=2*2^2007=
=2^2008
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