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16 April, 08:44

Factor out the GCF: 21c^9-28c^6

Select one:

a. 7c^3 (3c^6-4c^3)

b. 7c^6 (3c^3-4)

c. 7c (3c^8-4c^5)

d. 7 (3c^9-4c^6)

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Answers (1)
  1. 16 April, 09:04
    0
    To factor you find out what is common. 7 can go into both. Also c^6, so bring those outside:

    7c^6 (?-?)

    Now to find what goes in, simply remove 7c^6 from both 21c^9 and - 28c^6, which would be:

    7c^6 (3c^3-4) so Option B).
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