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30 December, 20:06

If f (x) = 7x to the second power + 3x+1 then find the the value of f (-2)

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  1. 30 December, 21:23
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    f ( - 2) = 23

    Step-by-step explanation:

    To evaluate f ( - 2) substitute x = - 2 into f (x), that is

    f ( - 2) = 7 ( - 2) ² + 3 ( - 2) + 1 = 7 (4) - 6 + 1 = 28 - 6 + 1 = 23
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