If `veca = 2vecj+3vecj-veck, vecb =-veci+2vecj-4veck and vecc=veci + vecj + veck`, then find the value of `(veca xx vecb).(vecaxxvecc)`

Explanation

To solve the problem, we need to find the value of \((\vec{a} \times \vec{b}) \cdot (\vec{a} \times \vec{c})\) given the vectors:

\[ \vec{a} = 2\vec{j} + 3\vec{j} - \vec{k} = 5\vec{j} - \vec{k} \]
\[ \vec{b} = -\vec{i} + 2\vec{j} - 4\vec{k} \]
...