12
<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
The sum of a positive number and its square is 156. What is the number?
Please reason step by step, and put your final answer within \boxed{{}}.<|im_end|>
<|im_start|>assistant

user
12
The sum of a positive number and its square is 156. What is the number?
train