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16 October, 14:14

Let f (x) = 2x^3 - 4x find f (-2)

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  1. 16 October, 14:47
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    Plug in - 2 for x.

    f (-2) = 2 (-2) ^3 - 4 (-2)

    f (-2) = 2 (8) + 8

    f (-2) = 16 + 8

    f (-2) = 24
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