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30 January, 17:04

Given that f (x) = x+2 and g (x) = x^2-2, find (f+g) (-4)

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  1. 30 January, 17:12
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    12

    Step-by-step explanation:

    note that (f + g) (x) = f (x) + g (x)

    f (x) + g (x) = x + 2 + x² - 2 = x² + x

    To evaluate (f + g) ( - 4) substitute x = - 4 into f (x) + g (x)

    (f + g) ( - 4) = ( - 4) ² + ( - 4) = 16 - 4 = 12
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