Question

A square + b square + c square equal to a b + bc + ca then a + c y is equal to

Answer 1

a² + b² + c² = ab + bc + ca

so, (a + b + c)² = a² + b² + c² +2(ab + bc + ca)
(a + b + c)² = a² + b² + c²+ 2(a² + b² + c²)
(a + b + c)² = 3(a² + b² + c²)
a + b + c = √(3(a² + b² + c²)