![](https://blog.hocmai.vn/wp-content/uploads/2017/07/hot.gif)
![](https://blog.hocmai.vn/wp-content/uploads/2017/07/hot.gif)
Cho a+b+c=abc
chứng minh rằng :
[tex]\frac{1}{a^3}+\frac{1}{b^3}+\frac{1}{c^3}\geq 3[/tex]
@Thánh Lầy Lội , @Ann Lee , @Bonechimte , @hdiemht , @sonnguyen05
chứng minh rằng :
[tex]\frac{1}{a^3}+\frac{1}{b^3}+\frac{1}{c^3}\geq 3[/tex]
@Thánh Lầy Lội , @Ann Lee , @Bonechimte , @hdiemht , @sonnguyen05