
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
Calculate: $16^{ \frac {1}{2}}+\left( \frac {1}{81}\right)^{-0.25}-\left(- \frac {1}{2}\right)^{0}$  
Simplify: $\left(2a^{ \frac {1}{4}}b^{- \frac {1}{3}}\right)\left(-3a^{- \frac {1}{2}}b^{ \frac {2}{3}}\right)÷\left(- \frac {1}{4}a^{- \frac {1}{4}}b^{- \frac {2}{3}}\right)$.

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