[tex]9= 2^{3}+ 2^{0} \\ 9= 2^{2}+ 2^{2}+ 2^{0} \\ 9= 2^{2}+ 2^{1}+2^{1}+ 2^{0} \\ 9= 2^{2}+2^{1}+ 2^{0}+ 2^{0}+ 2^{0} \\ 9= 2^{2}+2^{0}+ 2^{0}+ 2^{0} +2^{0}+ 2^{0} \\ 9=2+2+2+2+1 \\ 9=2+2+2+1+1+1
\\ 9=2+2+1+1+1+1+1 \\ 9=2+1+1+1+1+1+1+1 \\ 9=1+1+1+1+1+1+1+1+1[/tex]
La ultimele am scris mai simplu, ținând cont de:
[tex]2=2^{1} \\ 1=2^{0}[/tex]
