Gọi biểu thức trên là : A
\(A=2+\frac{1}{2+\frac{1}{2+\frac{1}{2+\frac{1}{2}}}}\)
\(A=2+\frac{1}{2+\frac{1}{2+\frac{1}{\frac{5}{4}}}}\)
\(A=2+\frac{1}{2+\frac{1}{2+\frac{4}{5}}}\)
\(A=2+\frac{1}{2+\frac{1}{\frac{14}{5}}}\)
\(A=2+\frac{1}{2+\frac{5}{14}}\)
\(A=2+\frac{1}{\frac{33}{14}}\)
\(A=2+\frac{14}{33}\)
\(A=\frac{80}{33}\)
Vậy : \(2+\frac{1}{2+\frac{1}{2+\frac{1}{2+\frac{1}{2}}}}=\frac{80}{33}\)