Answer
$P_{k+1}=(k+1)^2(k+4)^2$
Work Step by Step
$P_k=k^2(k+3)^2$
$P_{k+1}=(k+1)^2[(k+1)+3]^2=(k+1)^2(k+4)^2$
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.