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2 October, 08:27

Factor completely x8 - 81.

(x4 - 9) (x4 + 9)

(x2 - 3) (x2 + 3) (x4 - 9)

(x2 - 3) (x2 + 3) (x4 + 9)

(x2 - 3) (x2 - 3) (x4 - 9)

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  1. 2 October, 08:38
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    Option C, (x2 - 3) (x2 + 3) (x4 + 9)

    Step-by-step explanation:

    x^8 - 81 factors as (x^4 - 9) (x^4 + 9)

    (x^4 - 9) (x^4 + 9) factors as (x^2 - 3) (x^2 + 3) (x^4 + 9)

    Answer: Option C, (x2 - 3) (x2 + 3) (x4 + 9)
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