If $*$ represents an operation defined by $a*b=a^b+b$, find $(1*2)*3$.
Question:
If $*$ represents an operation defined by $a*b=a^b+b$, find $(1*2)*3$.
Answer:
Let's think step by step.

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If $*$ represents an operation defined by $a*b=a^b+b$, find $(1*2)*3$.
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