Question

one of the factor of (x-y)²-4(x-y)-45

Answer 1

This the right answer, hope it helps you

Answer 2

Given (x - y)^2 - 4(x - y) - 45 can be written as

          x^2 - 2xy - 4x + y^2 + 4y - 45

         (x - y - 9) ( x - y + 5)

        x - y = 9 (or) x - y = -5.


Hope this helps!