Question

if a² +b² + c²= (a+b+c)² then ab+ bc+ca=​

Answer 1

Answer:

ab+bc+ca= ABC

it is easy to answer when the number is their

Answer 2

Answer:

GIVEN THAT: a² + b² + c² = (a+b+c) ²

(a+b+c) ² = a² + b² + c² + 2(ab + bc + ca)

(a+b+c) ²= (a+b+c) ² + 2(ab + bc + ca)

2(ab + bc + ca) = (a+b+c) ² - (a+b+c) ²

2(ab + bc + ca) = 0

ab + bc + can = 0 ( ans)

HENCE 0 IS YOUR ANS