If a2 + b2 + c2 − ab − bc − ca =0, then(a) a + b + c(b) b + c = a(c) c + a = b(d) a = b = c

If a2 + b2 + c2 − ab − bc − ca =0, then(a) a + b + c(b) b + c =

1.	If a2 + b2 + c2 − ab − bc − ca =0, then(a) a + b + c(b) b + c = a(c) c + a = b(d) a = b = c
Answer» If a² + b² + c² − ab − bc − ca =0, then (a) a + b + c (b) b + c = a (c) c + a = b (d) a = b = c