Question Number 103254 by Study last updated on 13/Jul/20
$$\:\mathrm{2}^{\mathrm{3}{x}} −{f}\left({x}+\mathrm{4}\right)={k}\centerdot{f}\left({x}\right)\:\:\:\:\:;\:\:\:{k}=???? \\ $$
Commented by Study last updated on 14/Jul/20
$${who}\:{can}\:{help}\:{me}? \\ $$
Commented by Study last updated on 18/Jul/20
$${why}\:{u}\:{not}\:{help}\:{me}? \\ $$