INEQUALITY'S BLOG

December 5, 2011

Problem 307 vankhea

Filed under: Problem by Van Khea — KKKVVV @ 7:13 pm

if a, b, c are positive real numbers. Prove that:
\displaystyle (a^3+b^3)^2\geq \frac{1}{2}(a^4+b^4)(a+b)^2

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