Answered

write as a product of two polynomials.

(x-y)^2-a(y-x)

Answer :

[tex]\\ \sf\longmapsto (x-y)^2-a(y-x)[/tex]

[tex]\\ \sf\longmapsto x^2-2xy+y^2-(ay+ax)[/tex]

[tex]\\ \sf\longmapsto x^2+y^2-2xy-ay-ax[/tex]

Done