Question

scrieți ca putere a lui 2 numărul N+2 unde N=2 +2^2+2^3+...+2^2014

Answer 1

[tex]N=2+2^2+2^3+...+2^{2014}\\ 2N=2^2+2^3+...+2^{2015}\\ 2N-N=2^{2015}-2\\ N=2^{2015}-2 |+2\\ \boxed{N+2=2^{2015}}[/tex]