
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
The method of assigning values is a method of solving problems by assigning certain special values to some letters in algebraic expressions. Given $\left(2x-3\right)^{2}=ax^{2}+bx+c$. For example, assigning $x=0$, we can find $c=9$; assigning $x=1$, we can find $a+b+c=1$; assigning $x=-1$, we can find the value of the algebraic expression $a-b$ is ____.

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