
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 \( f(x) \) be a differentiable function defined on \((- \infty, 0)\), with its derivative denoted by \( f^{\prime}(x) \). Given the inequality \( 2 f(x) + x f^{\prime}(x) > x^2 \), determine the solution set for the inequality \((x+2017)^{2} f(x+2017) - f(-1) > 0\).

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