4 September 2025

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18 November 2023

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23 August 2020

• curprev 11:1511:15, 23 August 2020 Pureswag talk contribs 180 bytes +180 Created page with "Let <math>x, y, z > 0</math> satisfy <math>xyz\ge 1</math>. Prove that <cmath>\frac{x^5-x^2}{x^5+y^2+z^2} + \frac{y^5-y^2}{x^2+y^5+z^2} + \frac{z^5-z^2}{x^2+y^2+z^5} \ge 0.</c..."