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Factor by grouping: 3n3 + 3n2 - n - 1
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Factor by grouping: 3n3 + 3n2 - n - 1

User Rueta
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Answer:

(n+1) (3n^2-1)

Step-by-step explanation: group the factor out the greatest common factor (GCF) then combine.

User PurpleVermont
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