2
<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
If $2^8=16^x$, find $x$.
Please reason step by step, and put your final answer within \boxed{{}}.<|im_end|>
<|im_start|>assistant

user
2
If $2^8=16^x$, find $x$.
train