ĐKXĐ: \(x>1\)
\(\log_2\left(x+1\right)=1+\log_2\left(x-1\right)\)
\(\Leftrightarrow\log_2\left(x+1\right)=\log_22+\log_2\left(x-1\right)\)
\(\Leftrightarrow\log_2\left(x+1\right)=\log_22\left(x-1\right)\)
\(\Rightarrow x+1=2\left(x-1\right)\)
\(\Rightarrow x=3\)