Write three fractions so that their simplest common denominator is x (x + y) (X-Y). All denominators are polynomials, and one of them cannot contain a factor (x + y)

Write three fractions so that their simplest common denominator is x (x + y) (X-Y). All denominators are polynomials, and one of them cannot contain a factor (x + y)

1/(x²+xy)
1/(x²-xy)
1/(x²-y²)