
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
Calculate:  
(1) $(-6a^2b^5c) \div (-2ab^2)^2$  
(2) $(-3m-2n)(3m+2n)$  
(3) $\frac{(x-2y)^2 - (x-2y)(x+2y)}{2y}$

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