Inegalitate in numere reale

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Andi Brojbeanu
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Inegalitate in numere reale

Post by Andi Brojbeanu »

Daca \( x, y, z \in \mathb{R} \), atunci sa se demonstreze ca:
\( x(x+y)^3+y(y+z)^3+z(z+x)^3\geq \frac{8}{27}(x+y+z)^4 \)
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