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16 June, 15:42

Item 12 Given f (x) = 3x2-5x-2. What is the value of f (-23) ?

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  1. 16 June, 19:22
    0
    the answer is

    -25

    f (x) = 3x2-5x-2

    (3) (-23) (2) - (5) (-23) - 2

    = (-69) (2) - (5) (-23) - 2

    =-138 - (5) (-23) - 2

    =-138 - (-115) - 2

    =-23-2

    =-25
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