Answer
$(3k+4)(3k-4)$
Work Step by Step
Use the formula $a^2-b^2=(a+b)(a-b)$ to factor.
$9k^2-16$
$=(3k+4)(3k-4)$
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.