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factor by grouping:

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factor by grouping: 9AB + 15A + 21B +35=
asked Sep 5, 2018 in ALGEBRA 1 by abstain12 Apprentice
reshown Sep 5, 2018 by bradely
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1 Answer

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9AB + 15A + 21B +35  =  9AB + 21B + 15A  +35

                                     =  3B(3A + 7) + 5 (3A  + 7)

                                     =  (3A + 7)(3B + 5)

Answer :

9AB + 15A + 21B +35  =  (3A + 7)(3B + 5)

answered Sep 5, 2018 by homeworkhelp Mentor

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