If $x+y = 6$ and $x^2-y^2 = 12$, then what is $x-y$?
Question:
If $x+y = 6$ and $x^2-y^2 = 12$, then what is $x-y$?
Answer:
Let's think step by step.

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