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Question-171666




Question Number 171666 by Mastermind last updated on 19/Jun/22
Commented by kaivan.ahmadi last updated on 19/Jun/22
3^x +log_2 x=10⇒log_2 2^3^x  +log_2 x=10⇒  x×2^3^x  =2^(10) ⇒x=2^y   2^(y+3^2^y  ) =2^(10) ⇒y+3^2^y  =10=1+3^2     2^y =2⇒y=1⇒x=2
$$\mathrm{3}^{{x}} +{log}_{\mathrm{2}} {x}=\mathrm{10}\Rightarrow{log}_{\mathrm{2}} \mathrm{2}^{\mathrm{3}^{{x}} } +{log}_{\mathrm{2}} {x}=\mathrm{10}\Rightarrow \\ $$$${x}×\mathrm{2}^{\mathrm{3}^{{x}} } =\mathrm{2}^{\mathrm{10}} \Rightarrow{x}=\mathrm{2}^{{y}} \\ $$$$\mathrm{2}^{{y}+\mathrm{3}^{\mathrm{2}^{{y}} } } =\mathrm{2}^{\mathrm{10}} \Rightarrow{y}+\mathrm{3}^{\mathrm{2}^{{y}} } =\mathrm{10}=\mathrm{1}+\mathrm{3}^{\mathrm{2}} \\ $$$$ \\ $$$$\mathrm{2}^{{y}} =\mathrm{2}\Rightarrow{y}=\mathrm{1}\Rightarrow{x}=\mathrm{2} \\ $$

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