Question

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

Answer 1

Answer:

your answer is zero

Step-by-step explanation:

hope you understand the answer

Answer 2

Answer:

here is the identity used (x-y )(X+y) = (X square - y square)

(X square -y square)+( y square - z square )+( z square - X square)

0= 0