Proof: if ABC is positive, then (a + b) (B + C) (c + a) > = 8abc Online solution, get rid of~~

Proof: if ABC is positive, then (a + b) (B + C) (c + a) > = 8abc Online solution, get rid of~~

Arithmetic mean > = geometric mean
So there are
A + b > = under 2 radical (AB)
A + C > = 2 radical (AC)
C + b > = under 2 radical (CB)
You can get it by multiplying the three formulas
(a+b)(b+c)(c+a)>=8abc