Let $x = 2001^{1002} - 2001^{-1002}$ and $y = 2001^{1002}  + 2001^{-1002}.$  Find $x^2 - y^2.$
Question:
Let $x = 2001^{1002} - 2001^{-1002}$ and $y = 2001^{1002}  + 2001^{-1002}.$  Find $x^2 - y^2.$
Answer:
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Let $x = 2001^{1002} - 2001^{-1002}$ and $y = 2001^{1002}  + 2001^{-1002}.$  Find $x^2 - y^2.$
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