

Cho các số a,b,c>0
CMR:[tex]\frac{b+c}{a}+\frac{c+a}{b}+\frac{a+b}{c}\geq 4(\frac{a}{b+c}+\frac{b}{c+a}+\frac{c}{a+b})[/tex]
@dangtiendung1201 @Hoàng Vũ Nghị
CMR:[tex]\frac{b+c}{a}+\frac{c+a}{b}+\frac{a+b}{c}\geq 4(\frac{a}{b+c}+\frac{b}{c+a}+\frac{c}{a+b})[/tex]
@dangtiendung1201 @Hoàng Vũ Nghị