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AoPS Wiki talk:Problem of the Day/September 20, 2011

Revision as of 18:53, 20 September 2011 by Jackandraka (talk | contribs) (Created page with "f(x)=x^2 f(f(x+1)=f((x+1)^2)=(x+1)^4=x^4+4x^3+6x^2+4x+1")
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f(x)=x^2 f(f(x+1)=f((x+1)^2)=(x+1)^4=x^4+4x^3+6x^2+4x+1

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