Question

x – y)(x + y) + (y – z)(y + z) + (z – x) (z + x) is equal to *

2 points

(a) 0

(b) x² + y² + z²

(c) xy + yz + zx

(d) x + y + z.

​

Answer 1

Answer:

(a) 0

Step-by-step explanation:

You are BTS army please follow me