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14 April, 17:05

The solution of f (x) = x^3-2x^2 - 9x + 18 is

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  1. 14 April, 17:14
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    x = - 3, 2, 3.

    Step-by-step explanation:

    f (x) = x^3 - 2x^2 - 9x + 18 We factor this by grouping:

    f (x) = x^2 (x - 2) - 9 (x - 2)

    f (x) = (x ^2 - 9) (x - 2)

    f (x) = (x - 3) (x + 3) (x - 2).

    The zeroes of the function are:

    x = - 3, 2, 3.
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