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2 July, 02:47

If f (x) = 2x2 - 30, find f (4).

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  1. 2 July, 05:49
    0
    Just replace x = 4

    2x^2 - 30

    =2 * (4) ^2 - 30

    = 2 * 16 - 30

    = 32 - 30

    = 2

    Answer is 2
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