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28 January, 17:51

F (x) = 5x-1 and g (x) = x^2-4 find (fog) (-5)

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  1. 28 January, 18:12
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    We calculate g (-5); then f (g (-5));

    g (-5) = (-5) ^2 - 4 = 25 - 4 = 21;

    f (g (-5)) = f (21) = 5 x 21 - 1 = 105 - 1 = 104;
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