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Dac N=2+2^2+2^3+•••+2^2007,scrieti ca putere a luiw numatul N+2

Răspuns :

N + 2 = (2+2) +2² +2³ +.........2^2007 =(2³ +2³) +2^4 +2^5+....2^2007=
(2^4 +2^4) +.........2^2007 = .......... 2^2007 + 2^2007 = 2^2008

2² +2² =2³ ;  2³ +2³ =2^4...........2^2007 + 2^2007 = 2^2008