Question

If a+b+c=9
Ab+bc+ca=26
Find (a)sq.+(b)sq.+(c)sq.

Answer 1

Answer:

29

Step-by-step explanation:

a+b+c=9

Now,

(a+b+c)²=a²+b²+c²+2ab+2bc+2ac

9²=a²+b²+c²+2(ab+bc+ac)

81=a²+b²+c²+2(26)

a²+b²+c²=81-52

a²+b²+c²=29