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2013 AMC 10B Problems/Problem 14

Revision as of 18:10, 21 February 2013 by JWK750 (talk | contribs) (→‎Problem)
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Define $a\clubsuit b=a^2b-ab^2$. Which of the following describes the set of points $(x, y)$ for which $x\clubsuit y=y\clubsuit x$?

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