Question

factorise x square-y square​

Answer 1

Answer:

(x + y) (x - y)

Step-by-step explanation:

= x^2 - y^2

= (x + y) (x - y)

Answer 2

Answer:

x2 − y2

Step-by-step explanation:

x2 − y2 = ( x − y ) ( x + y )

When multipled ( x − y ) by ( x + y ) then the terms in xy cancel out, leaving x2 − y2

( x − y ) ( x + y ) = x 2 + x y − y x − y 2

= x2 + xy − xy − y2 =

x2 − y2