Answer
1
Work Step by Step
$y^{2}$+9y-y-9
y(y+9)-1(y+9)
(y+9)(y-1)
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.