Răspuns :
[tex]2^{60}=2k+1+2k+3 \\
2^{60}=4k+4|:4
\\2^{58}=k+1\\
k=2^{58}-1\\
2k+1=2^{59}-1\\
2k+3=2^{59}+1[/tex]
Verificare:
[tex]2^{59}-1+2^{59}+1=2^{59}+2^{59}=2^{1}\cdot 2^{59}=2^{60}[/tex]
Verificare:
[tex]2^{59}-1+2^{59}+1=2^{59}+2^{59}=2^{1}\cdot 2^{59}=2^{60}[/tex]