
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:<br/>$(1)-2(a^{2}-4b)+3(2a^{2}-4b)$.<br/>$(2)(4x+x^{2})-3(2x-x^{2}+1)$.<br/>$(3)4a-2b+3\left(3b-2a\right)$.<br/>$(4)-{2}^{2}-25÷(3\frac{1}{2}-1)×(1-\frac{2}{5})$.

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