K
ktx_can
![](https://blog.hocmai.vn/wp-content/uploads/2017/07/hot.gif)
![](https://blog.hocmai.vn/wp-content/uploads/2017/07/hot.gif)
a,b,c >0
a + b + c =3abc. Chứng minh rằng
abc + $\frac{1}{ab + bc + ca}$ [TEX]\geq \frac{4}{3}[/TEX]
a + b + c =3abc. Chứng minh rằng
abc + $\frac{1}{ab + bc + ca}$ [TEX]\geq \frac{4}{3}[/TEX]