Respuesta :

[tex]\begin{gathered} 3(12-9)+5^2=3(12-9)+25 \\ 3(12-9)+25=3\cdot12-3\cdot9+25 \\ 3\cdot12-3\cdot9+25=36-27+25 \\ 36-27+25=34 \end{gathered}[/tex]

Answer: B. 34