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User:Xyteron

Revision as of 18:02, 28 November 2006 by Xyteron (talk | contribs)

$a^4 – b^4$ = (a^2 – b^2)(a^2 + b^2) = $729((a+b)^2 – 4ab)$ = 729(841 – 224) = 449,793</math>

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