INEQUALITY'S BLOG

July 13, 2011

Problem 235 (van khea)

Filed under: Problem by Van Khea — KKKVVV @ 2:43 am

Let a, b, c\geq 0. Prove that: (a^2+b^2+c^2)^3\geq 8\biggl[(ab)^3+(bc)^3+(ca)^3\biggl]

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