olymmath

JBMO-SL 2019 A1

    Real numbers aa and bb satisfy a3+b3−6ab=−11a^{3}+b^{3}-6 a b=-11. Prove that −73<a+b<−2-\frac{7}{3}<a+b<-2.

    Dataset text NuminaMath olympiads. Quoted with source.

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