x² - xz + xy - yz
x (x-z) +y (x-z)
(X+y) (x-z)
Factorise : x2−xz+xy−yz
x2−xz+xy−yz=?(a) (x−y)(x+z)(b) (x−y)(x−z)(c) (x+y)(x−z)(d) (x−y)(z−x)