Chapter 11.4, Problem 7ES

Let $\text{u}=〈\text{2,}-\text{1,}\text{3}〉\text{,}\text{v}=〈\text{0,}\text{1,}\text{7}〉\text{,}\text{and}\text{w}=〈\text{1,}\text{4,}\text{5}〉\text{.}$ Find

$\begin{array}{l}\left(\text{a}\right)\text{u}\times \left(\text{v}\times \text{w}\right)\hfill \\ \left(\text{b}\right)\left(\text{u}\times \text{v}\right)\times \text{w}\hfill \\ \left(\text{c}\right)\left(\text{u}\times \text{v}\right)\times \left(\text{v}\times \text{w}\right)\hfill \\ \left(\text{d}\right)\left(\text{v}\times \text{w}\right)\times \left(\text{u}\times \text{v}\right)\text{.}\hfill \end{array}$