Question

If a + b + c = 0 and a2 + b2 + c2 = k (a? - bc) then k =?​

Answer 1

a+b+c=0

Squaring,

a²+b²+c²+2(ab+bc+ca)=0

So, a²+b²+c²=k=-2ab-2bc-2ca

✌️PLEASE MARK AS BRAINLIEST ✌️✌️

Answer 2

Here is the solution. Please mark it as the brainliest answer. :)