S
sparda9999


cho [TEX]a+b+c=3[/TEX] và a,b,c>0 CMR:
[TEX]\frac{a^3}{a+bc}+\frac{b^3}{b+ac}+\frac{c^3}{c+ab}\geq\frac{3}{2}[/TEX]
[TEX]\frac{a^3}{a+bc}+\frac{b^3}{b+ac}+\frac{c^3}{c+ab}\geq\frac{3}{2}[/TEX]