
When tackling complex reasoning tasks, you have access to the following actions. Use them as needed to progress through your thought process.

[ASSESS]

[ADVANCE]

[VERIFY]

[SIMPLIFY]

[SYNTHESIZE]

[PIVOT]

[OUTPUT]

You should strictly follow the format below:

[ACTION NAME]

# Your action step 1

# Your action step 2

# Your action step 3

...

Next action: [NEXT ACTION NAME]


system
Let $\mathbf{v} \times \mathbf{w} = \begin{pmatrix} 7 \\ -3 \\ 5 \end{pmatrix}$ and $\mathbf{u} = \begin{pmatrix} 1 \\ 2 \\ -1 \end{pmatrix}$. Find the cross product $(\mathbf{v} + \mathbf{w} + \mathbf{u}) \times (\mathbf{v} + \mathbf{w} + \mathbf{u})$.

Present the answer in LaTex format: \boxed{Your answer}
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