\( \definecolor{colordef}{RGB}{249,49,84} \definecolor{colorprop}{RGB}{18,102,241} \)
Consider the matrix \(\mathbf{B}\) defined as:$$ \mathbf{B}=\begin{pmatrix}1&\sqrt{2}&0&9 \\ -5&3&11&8 \end{pmatrix} $$What is the value of the entry \(b_{12}\)?
\(b_{12}=\)