Question

The product (x – z – y) (y + x – z) is equal to

Answer 1

Answer:

Step-by-step explanation:

(x - z - y) (y + x - z)

= x(y + x - z) - z(y + x - z) - y(y + x - z)

= xy + x² - xz - yz - xz + z² - y² - xy + yz

= x² - y² + z² - 2xz