Verified answer

Ответ:

[tex](x-4)(x-y)[/tex]

Объяснение:

[tex]x^2-xy-4x+4y=x(x-y)-4(x-y)=(x-4)(x-y)[/tex]

[tex]\displaystyle x^2-xy-4x+4y=x(x-y)-4(x-y)=(x-y)(x-4)[/tex]