Question

factorise x(x-1)-y(y-1)​

Answer 1

Step-by-step explanation:

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

= x^2 - x - y^2 - y

= x^2 - y^2 - x - y

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

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

Answer 2

Step-by-step explanation:

x²-x-y²-y

x²-y²-(x+ y)

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

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