
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
Given two vectors in the plane, $\overrightarrow{a} = (1, x)$ and $\overrightarrow{b} = (2x+3, -x)$, where $x \in \mathbb{R}$.
1. If $\overrightarrow{a} \parallel \overrightarrow{b}$, find $|\overrightarrow{a} - \overrightarrow{b}|$.
2. If the angle between $\overrightarrow{a}$ and $\overrightarrow{b}$ is acute, find the range of values for $x$.

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