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Omni-MATH / Find the smallest value that the expression takes x⁴+y⁴−x²y−xy², for positive numbers x and y satisfying x+y≤1. · Discussion

Discussing Find the smallest value that the expression takes x⁴+y⁴−x²y−xy², for positive numbers x and y satisfying x+y≤1. · Omni-MATH

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