
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
Given the algebraic expression $A=3x^{2}-x+1$, Ma Xiaohu mistakenly treated "$A-B$" as "$A+B$" when performing polynomial addition and subtraction, resulting in $2x^{2}-3x-2$.<br/>$(1)$ Please help Ma Xiaohu find the correct result;<br/>$(2)$ If $x$ is the largest negative integer, substitute $x$ into the result obtained in $(1)$ and calculate the value.

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