Answer
$9a(a-x^2)$
Work Step by Step
9a is a common factor of each term in the polynomial, so we factor it out.
$9a^2-9ax^2=9a(a-x^2)$
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.