
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:  
(1) Simplify first, then evaluate: \\(a(a-4)-(a+6)(a-2)\\), where \\(a=- \dfrac {1}{2}\\).  
(2) Simplify first, then evaluate: \\((x+2y)(x-2y)-(2x-y)(-2x-y)\\), where \\(x=8\\), \\(y=-8\\).

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