\"\"

\

The expression is \"\".

\

\"\"                                       (Substitute: m = 4 and n = 5)

\

\"\"                                      (Evaluate power: \"\") \ \

\

\"\"                                          (Multiply: \"\")

\

\"\"                                          (Write 100 as \"\")

\

\"\"                                                (Cancel square and root)\"\"

\

 The value of the expression is 10.