Question

set
b + c
C+a
A+b
a+b
b+c
C+a
a
b
c
=a3+b3+c3-3abc​

Answer 1

Answer:

Prove a3+b3+c3-3abc=(a+b+c)(a2+b2+c2-ab-bc-ac) It is a special identity of polynomial of class 9