Question Number 171841 by Mikenice last updated on 21/Jun/22
$${solve}: \\ $$$$\mathrm{2}^{\left(\mathrm{5}{x}−\mathrm{20}\right)} =\mathrm{1}! \\ $$
Answered by puissant last updated on 23/Jun/22
$$\Rightarrow\:\left(\mathrm{5}{x}−\mathrm{20}\right){ln}\mathrm{2}\:=\:\mathrm{0} \\ $$$$\Rightarrow\:\mathrm{5}{x}−\mathrm{20}=\mathrm{0} \\ $$$$\Rightarrow\:{x}=\mathrm{4}.. \\ $$