SOLUTION: Factor.3a^2(a-b)-6a(a-b)+21(a-b) Please assist me with the proper way to do this problem. Possible answers: A: (3a – b)(a^2 – 2a + 7), B:3(a – b)(a^2 – 6a + 21), C:(a – b)

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Question 128042: Factor.3a^2(a-b)-6a(a-b)+21(a-b)
Please assist me with the proper way to do this problem.
Possible answers: A: (3a – b)(a^2 – 2a + 7), B:3(a – b)(a^2 – 6a + 21),
C:(a – b)(3a^2 – 6a + 21)D:3(a – b)(a^2 – 2a + 7).
Thanks

Answer by solver91311(24713)   (Show Source): You can put this solution on YOUR website!


All of the terms have a common factor of , so start with that.



Now the coefficients on the trinomial part have a common factor of 3, so:

, which I believe is your answer D. Final answer, Regis.

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