Respuesta :

Given: [tex] {x}^{2} - 7x + 7y - {y}^{2} [/tex]

Now factoring them,

[tex] = > (x - y)(x + y) - 7(x - y)[/tex]

[tex] = > (x - y)(x + y - 7)[/tex]

Therefore, the answer to the question is [tex] (x - y)(x + y - 7)[/tex]

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