Question

scrie sub forma de putere
$2^{1997}- 2^{1996}$

Answer 1

$2^{1997}- 2^{1996}= 2*2^{1996}- 2^{1996}= 2^{1996}(2-1)= 2^{1996}$

Answer 2

$2^{1997}-2^{1996}=\\2^{1996+1}-2^{1996+0}=\\2^{1996}*2^{1}-2^{1996}*2^{0}=\\2^{1996}*(2^{1}-2^{0})=\\2^{1996}*(2-1)=\\2^{1996}*1=\\2^{1996}\\Sfarsit!$