Question

Find a2+b2+c2 if a + b + c = 10 and ab + bc + ca = 35​

Answer 1

Answer:

We know, (a+b+c)2=a2+b2+c2+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

Step-by-step explanation:

hope it helps you

plz mark me brainliest

drop some thanks ✌️

Answer 2

Answer:

( a+b+c)^2=a^2+b^2+c^2+2ab+2bc+2ac

(10)^2=a^2+b^2+c^2+2(ab+bc+ac)

100=a^2+b^2+c^2+2*35

a^2+b^2+c^2=100-70=30 ans.