2
<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
If $x+y = 6$ and $x^2-y^2 = 12$, then what is $x-y$?
Please reason step by step, and put your final answer within \boxed{{}}.<|im_end|>
<|im_start|>assistant

user
2
If $x+y = 6$ and $x^2-y^2 = 12$, then what is $x-y$?
train