If $x-y=1$ and $x^2+y^2=7$, find $x^3-y^3$.
<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
If $x-y=1$ and $x^2+y^2=7$, find $x^3-y^3$.
Please reason step by step, and put your final answer within \boxed{{}}.<|im_end|>
<|im_start|>assistant

user
10
If $x-y=1$ and $x^2+y^2=7$, find $x^3-y^3$.
train