Question

if a+B+c=0 then find a^2+b^2+c^2​

Answer 1

answer

- 2(ab + bc + ca )

Explanation

(a + b+ c)^2 = a^2 + b^2 +c^2 + 2(ab + bc + cb)

while putting given value

0 = a^2 + b^2 + c^2 + 2(ab +bc+ ca )

a^2 + b^2 + c^2 = - 2(ab + bc + ca)

Answer 2

refer to the attachment