SOLUTION: I need help factoring: (a+b)(3ab+b^2)

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Question 775169: I need help factoring:
(a+b)(3ab+b^2)
Answer by sofiyac(983) About Me  (Show Source):
You can put this solution on YOUR website!
%28a%2Bb%29%283ab%2Bb%5E2%29 factor out b from the second portion
(a+b)b(3a+b)=b(a+b)(3a+b)