\( \definecolor{colordef}{RGB}{249,49,84} \definecolor{colorprop}{RGB}{18,102,241} \)
Calculate:
\(\begin{pmatrix} 3 \\ -4 \\ 2 \end{pmatrix}\cdot \begin{pmatrix} 5 \\ 1 \\ -1 \end{pmatrix} =\)