Question

Factorise: (x-y)² -z²

Answer 1

Answer:

it is a^2 - b^2 formula

(x-y)^2-z^2

Answer 2

Answer:

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

Step-by-step explanation:

a²+b2=(a+b)(a-b)

(x-y)²-z²

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