1997 USAMO Problems/Problem 5: Difference between revisions
Created page with "== Problem == Prove that, for all positive real numbers <math>a, b, c,</math> <math>(a^3+b^3+abc)^{-1}+(b^3+c^3+abc)^{-1}+(a^3+c^3+abc)^{-1}\le(abc)^{-1}</math>. == Solution ==" |
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