Write out step by step what needs to be done in order to get the answer to the expression below.

10.
The expression can be simplified as,
[tex]\begin{gathered} 3^2+\frac{10-4}{2} \\ =9+\frac{10-4}{2} \\ =9+\frac{6}{2} \\ =9+3 \\ =12 \end{gathered}[/tex]Thus, the required answer is 12.