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8 March, 13:24

If f (x) = 2x + 3 and g (x) = x2 - 1, what is the degree of [fog) (x) ?

O 2

O 5

O 7

o 10

+1
Answers (1)
  1. 8 March, 14:34
    0
    Answer: 2

    Step-by-step explanation:

    f (x) = 2x + 3 g (x) = x² - 1

    f (g (x)) = f (x² - 1)

    = 2 (x² - 1) + 3

    = 2x² - 2 + 3

    = 2x² + 1

    The largest exponent is 2 so the degree is 2.
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