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5 January, 22:34

Let f (x) = x-2 and g (x) = x to the second power - 7x-9. find f (g (-1))

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  1. 5 January, 22:54
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    f (g (-1)) = - 3

    Evaluate g (-1) and substitute into f (x)

    g (-1) = (-1) ² - 7 (-1) - 9 = 1 + 7 - 9 = - 1

    f (g (-1)) = (-1) - 2 = - 3
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