Q
quocbao153


Let [tex]a,b,c>0, a,b,c \in R[/tex] such that [tex]abc=1[/tex]. Prove that:
[tex]\frac{a+b}{\sqrt{c}}+\frac{a+c}{\sqrt{b}}+\frac{c+b}{\sqrt{a}}\geq\sqrt{a}+\sqrt{b}+\sqrt{c}+3[/tex]
[tex]\frac{a+b}{\sqrt{c}}+\frac{a+c}{\sqrt{b}}+\frac{c+b}{\sqrt{a}}\geq\sqrt{a}+\sqrt{b}+\sqrt{c}+3[/tex]