SOLUTION: Let x=2001^1002 - 2001^-1002 and y = 2001^1002 +2001^-1002. Find x^2 - y^2

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Question 1049434: Let x=2001^1002 - 2001^-1002 and y = 2001^1002 +2001^-1002. Find x^2 - y^2
Answer by stanbon(75887) About Me  (Show Source):
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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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Note:: x^2 - y^2 = (x+y)(x-y)
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x+y = 2(2001^1002)
x-y = -2(2001^-1002)
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(x+y)(x-y) = -4*1 = -4
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Cheers,
Stan H.
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