
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
Evaluate the expression: $2^{-(3k+1)} - 2^{-(3k-2)} + 2^{-3k}$.
A) $-4 \cdot 2^{-3k}$
B) $-\frac{5}{2} \cdot 2^{-3k}$
C) $-2^{-3k}$
D) $-\frac{7}{2} \cdot 2^{-3k}$

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