Question

please answer this question

answer only if u know
don't post irrelevant answers​

Answer 1

Answer:

Given that a+b+c=9

Squaring both sides

(a+b+c)²=9²

a²+b²+c²+2ab+2bc+2ac=81

(since ab+bc+ca)=26

a²+b²+c²+2(26)=81

a²+b²+c²=81-52

a²+b²+c²=29