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Question Number 198065 by giovi last updated on 09/Oct/23

$$2^x+9+2^x=40$$

Answered by a.lgnaoui last updated on 09/Oct/23

$$2^{\mathrm{x}+1}=31\Rightarrow (\mathrm{x}+1)\ln 2=\ln 31$$$$\mathrm{x}=\frac{\ln 31}{\ln 2}-1\mathbf{x}=\frac{\mathbf{ln}31-\mathbf{ln}2}{\mathbf{ln}2}$$

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