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23 April, 05:33

Given the function f (x) = - 5x2 - x + 20, find f (3).

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  1. 23 April, 05:42
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    f (x) = - 5x^2 - x + 20;

    f (3) = - 5*3^2 - 3 + 20 = - 5*9 - 3 + 20 = - 45 - 3 + 20 = - 28;
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