6*{2}^(2)-1/2need help

Question

6*
`{2}^(2)`-1/2need help

Answer 1

`\begin{gathered} 6\cdot2^2-(1)/(2)=6\cdot4-(1)/(2) \\ 24-(1)/(2)=(47)/(2)=23(1)/(2) \\ \end{gathered}`

So the answer is D