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23 September, 20:08

Let f (x) = x^2+5 and g (x) = ((x+5) / x). Find (g*f) (-3)

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  1. 23 September, 20:24
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    Hello,

    f (x) = x²+5

    g (x) = (x+5) / x

    g (f (x)) = g (x²+5) = (x²+5+5) / (x²+5) = (x²+10) / (x²+5)

    g (f (-3)) = (9+10) / (9+5) = 19/14
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