Let $\mathbf{a}$ and $\mathbf{b}$ be vectors such that $\|\mathbf{a} \times \mathbf{b}\| = 2.$  Compute
\[\mathbf{a} \cdot (\mathbf{b} \times (\mathbf{a} \times \mathbf{b})).\]
<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Let $\mathbf{a}$ and $\mathbf{b}$ be vectors such that $\|\mathbf{a} \times \mathbf{b}\| = 2.$  Compute
\[\mathbf{a} \cdot (\mathbf{b} \times (\mathbf{a} \times \mathbf{b})).\]
Please reason step by step, and put your final answer within \boxed{{}}.<|im_end|>
<|im_start|>assistant

user
4
Let $\mathbf{a}$ and $\mathbf{b}$ be vectors such that $\|\mathbf{a} \times \mathbf{b}\| = 2.$  Compute
\[\mathbf{a} \cdot (\mathbf{b} \times (\mathbf{a} \times \mathbf{b})).\]
train