\"\"

\

The expression is \"\"

\

\"\"          (Substitute \"\" in given expression)

\

\"\"      (Apply associative property of multiplication: \"\")

\

\"\"              (Product of two same signs is positive)

\

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

\

\"\"                  (Product of two same signs is positive)

\

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

\

The value of the expression is 108.