Normal
Cho a,b,c>0 thõa mãn abc=1 CMR\[1 + \frac{3}{{a + b + c}} \ge \frac{6}{{ab + bc + ac}}\\]
Cho a,b,c>0 thõa mãn abc=1 CMR
\[1 + \frac{3}{{a + b + c}} \ge \frac{6}{{ab + bc + ac}}\\]
