INEQUALITY'S BLOG

July 11, 2011

Problem 222 (van khea)

Filed under: Problem by Van Khea — KKKVVV @ 11:02 pm

Let a, b, c\geq 0. Prove that: (a^3+b^3+c^3)^2\geq 3(a^4b^2+b^4c^2+c^4a^2)

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