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16 July, 09:45

If f (x) = 2x + 3 and g (x) = x2 + 1, find f (g (3))

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  1. 16 July, 11:28
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    F (g (x)) = 2 (x^2+1) + 3

    f (g (x)) = 2x^2+2+3

    f (g (x)) = 2x^2+5

    f (g (3)) = 2 (3^2) + 5

    f (g (3)) = 2 (9) + 5

    f (g (3)) = 18+5

    f (g (3)) = 23
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