
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
Emily now wants to calculate $49^2$ and decides to use the value of $50^2$, similarly to how she calculated $31^2$ and $29^2$. She first mentally calculates $50^2$ and then subtracts a number to find $49^2$. What number does she subtract?

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