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8 January, 00:20

Multiply and simplify. (x - 3) (x2 + 3x + 9) A) x3 - 27 B) x3 - 27x2 C) x3 - 6x2 + 3x - 27 D) x3 - 9x2 + 6x - 27

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  1. 8 January, 00:32
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    We have the following expression:

    (x - 3) (x2 + 3x + 9)

    Rewriting we have:

    (x3 + 3x2 + 9x) + (-3x2 - 9x - 27)

    Adding similar terms we have:

    x3 + x2 (3-3) + x (9-9) - 27

    x3 - 27

    Answer:

    The simplified expression is:

    A) x3 - 27
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