SOLUTION: Factor by grouping: 18n3+42n2+21n+49

Question 973583: Factor by grouping: 18n3+42n2+21n+49
Found 2 solutions by Boreal, stanbon:
Answer by Boreal(15235) (Show Source): You can put this solution on YOUR website!
(18n^3 + 42 n^2) + (21n + 49)
6n^2(3n+7) + 7(3n + 7)
Now combine the leading terms, since they are both multiplied by the same factor.
(6n^2 + 7) ((3n + 7)
When doing these, look for groups that will have either the same factor or the same if multiplied by minus 1 [ (x-7) and (7-x), for example]
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
Factor by grouping: 18n3+42n2+21n+49
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6n^2(3n+7) + 7(3n+7)
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(3n+7)(6n^2+7)
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Cheers,
Stan H.
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