Question

FACTOR COMPLETELY x^2-7x+7y-y^2

Answer 1

Given: ${x}^{2} - 7x + 7y - {y}^{2}$

Now factoring them,

$= > (x - y)(x + y) - 7(x - y)$

$= > (x - y)(x + y - 7)$

Therefore, the answer to the question is $(x - y)(x + y - 7)$