Question

if a + b + c is equals to zero then the value of a square + b square + c square by a C + CA + A B

Answer 1

when a+b+c = 0

then formula of a²+b²+c²+ab+BC+ca is (a+b+c)(a²+b²+c²+2ab+2bc+2ca)

hence

by putting the vale of a+b+c

0 × a²+b²+c²+2ab+2bc+2ca

0

Answer 2

the answer is 3abc because over there you are going to add nothing and your going to do it something like

3( abc)