[tex]\displaystyle\\\text{folosim formula:}\\\\2^0+2^1+2^2+2^3+...+2^n=\boxed{2^{n+1}-1}\\\\\text{Rezolvare:}\\\\2+2+2^2+2^3+...+2^{301}=\\\\=1+1+2+2^2+2^3+...+2^{301}=\\\\=1+2^0+2^1+2^2+2^3+...+2^{301}=1+2^{301+1}-1=1+2^{302}-1=\boxed{2^{302}}\\\\\text{Raspuns corect: }~~b)[/tex]
