Question Number 204373 by esmaeil last updated on 14/Feb/24
$$\mathrm{3}^{{x}} −\mathrm{2}^{{x}} =\mathrm{65} \\ $$$${x}=? \\ $$
Answered by Frix last updated on 14/Feb/24
$$\mathrm{Obviously}\:{x}=\mathrm{4} \\ $$$$\mathrm{81}−\mathrm{16}=\mathrm{65} \\ $$
Commented by esmaeil last updated on 15/Feb/24
$${solution}? \\ $$
Commented by Frix last updated on 15/Feb/24
$$\mathrm{No}\:\mathrm{method}.\:\mathrm{If}\:\mathrm{it}'\mathrm{s}\:\mathrm{not}\:\mathrm{obvious}\:\mathrm{you}\:\mathrm{can}\:\mathrm{only} \\ $$$$\mathrm{approximate}. \\ $$