#### Answer

$x^4+12x^3y+54x^2y^2+108xy^3+y^4$

#### Work Step by Step

$(x+3y)^4$
$x^4+4x^3(3y)+6x^2(3y)^2+4x(3y)^3+y^4$
$x^4+12x^3y+6x^2(9y^2)+4x(27y^3)+y^4$

Published by
Prentice Hall

ISBN 10:
0133186024

ISBN 13:
978-0-13318-602-4

$x^4+12x^3y+54x^2y^2+108xy^3+y^4$

$(x+3y)^4$
$x^4+4x^3(3y)+6x^2(3y)^2+4x(3y)^3+y^4$
$x^4+12x^3y+6x^2(9y^2)+4x(27y^3)+y^4$

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.