Question

if a + b + c is equals to 8 and a b + BC + CA is equals to 19 find a square + b square + c square​

Answer 1

Answer:

A=4, B=3,C=1

Step-by-step explanation:

A into b =12 + b into c =3 + c into a = 4 = ab+bc+ca= 12+3+4=19

Answer 2

Given that :a+b+c=8
ab+bc+CA=19
So by using the identity (a+b+c)^2=a^2+b^2+c^2+2ab+2bc+2ca we can find the answer