Question

(b+c)²/bc +(c+a)²/ca+(a+b)²/ab is to find if a+b+c=0

Answer 1

Hope it will help you

Answer 2

a+b+c=0
1. b+c=-a
2. a+b=-c
3. c+a=-b

-a^3/bc + -b^3/ca + -c^3/ab
=-(a^3+b^3+c^3)/abc
=-3abc/abc
=-3