Answer
-3 multiplicity 3
Work Step by Step
Equate the factor $x+3$ to zero then solve the equation:
$x+3=0
\\x=-3$.
The factor $(x-3)$ appears three times, so the zero, -3, has multiplicity 3.
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.