Question

1+xy-x-y factorise plzzzzzz​

Answer 1

${ \boxed{ \huge{ \mathbf{1 + xy - x - y}}}} \\ \\ { \boxed{ \huge{ \mathbf{1(1 - x) - y(1 - x)}}}} \\ \\ { \boxed{ \huge{ \mathbf{(1 - x)(1 - y)}}}}$