
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
For real numbers $x$ and $y$, define $x\spadesuit y = (x + y)^2 - (x - y)^2$. What is $2\spadesuit(3\spadesuit 4)$?
A) 360
B) 372
C) 384
D) 396
E) 408

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