Question

Factorise
$\sf{ {x}^{2} - {y}^{2} - x + y}$
Show workings too! ​

Answer 1

Answer:

(x-y) (x+y-1)

Step-by-step explanation:

x^2-y^2-x+y

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

(x-y) (x+y-1)

Answer 2

Answer:

(x-y) (x+y-1)

Step-by-step explanation:

x2-y2-x+y

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

= (x-y) (x+y-1)