AoPS Wiki:Problem of the Day/September 15, 2011

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Revision as of 17:27, 16 September 2011 by Negativebplusorminus (talk | contribs)
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If $x+y=z$, then find $x^5+y^5+5xy(x^3+y^3)+10x^2y^2(x+y)$ in terms of $z$.

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