
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
Simplify first, then evaluate: $[\left(2x-y\right)^{2}-\left(y+2x\right)\left(y-2x\right)]\div ({-\frac{1}{2}x})$, where $x=\left(\pi -3\right)^{0}$ and $y={({-\frac{1}{3}})^{-1}}$.

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