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4 November, 23:14

Find f (g (-4)) and g (f (-4)) using the functions below.

f (x) = 2x + 7

g (x) = x2 + 3x - 1

+1
Answers (1)
  1. 4 November, 23:21
    0
    f (g (-4)) = 13.

    g (f (-4)) = - 3.

    Step-by-step explanation:

    g (-4) = (-4) ^2 + 3 (-4) - 1

    = 3.

    so f (g (-4))

    = f (3)

    = 2 (3) + 7

    = 13.

    f (-4) = 2 (-4) + 7

    = - 1.

    so g (f (-4))

    = g (-1)

    = (-1) ^2 - 3 - 1

    = - 3.
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