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6 December, 20:27

If f (x) = 2x2 - 30, find f (4) would you put the 4 in the f (x) place?

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  1. 6 December, 20:52
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    F (x) = 2 x² - 30

    x = 4;

    f (4) = 2 · 4² - 30 = 2 · 16 - 30 = 32 - 30 = 2
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