Answer
(y+2)(y-2)(x-7)
Work Step by Step
x$y^{2}$-7$y^{2}$-4x+28=
$y^{2}$(x-7)-4(x-7)=($y^{2}$-4)(x-7)=($y^{2}$-$2^{2}$)(x-7)=
(y+2)(y-2)(x-7)
You can help us out by revising, improving and updating this answer.
Update this answerAfter you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.