Question

a+b=10. a²+b²+c²=36. ​

Answer 1

Answer:

We know, (a+b+c)

2

=a

2

+b

2

+c

2

+2ab+2bc+2ca

(10)

2

=36+2(ab+bc+ca)

100−36=2(ab+bc+ca)

2(ab+bc+ca)=64

(ab+bc+ca)=32