Question

2 la puterea x +1 -5•2 la puterea x +2 =0
Ajutor !

Answer 1

$2^{x+1} -5* 2^{x}+2=0=\ \textgreater \ 2*2^{x} -5* 2^{x}+2=0=\ \textgreater \ -3*2^{x}=-2$$=\ \textgreater \ 2^{x}= \frac{2}{3} =\ \textgreater \ x= log_{2} \frac{2}{3} =\ \textgreater \ x=1- log_{2} 3$