\

The expression is \ \

                  (Substitute: a = 4 and c = 100)

First find the value of

The radical indicates positive square roots of 4.

                       (Factorize: )

= 2                             (Recall: )

Next find the value of

The radical indicates positive square roots of 100.

                     (Factorize:)

                          (Recall)

Rewrite the expression

        (Substitute: )

= 12                           (Add: 2 + 10 = 12)

The value of the expression is 12.