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USAMO Problem
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Ender
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USAMO Problem
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on:
July 11, 2007, 07:45:21 pm »
Prove that the zeros of x^5 + ax^4 + bx^3 + cx^2 + dx + e = 0 cannot all be real if 2a^2 < 5b.
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Clan x86
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USAMO Problem