Question

разложите на множители: xy-xz-y+z

Answer 1

xy-xz-y+z=(xy-y)-(xz-z)=y(x-1)-z(x-1)=(y-z)(x-1)

Answer 2

xy-xz-y+z=(xy-y)-(xz-z)=y(x-1)-z(x-1)=(y-z)(x-1)