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1 June, 09:19

If f (x) = 2x and g (x) = x^2 - 1, which statement is true?

A. (f • g) (x) = 2x^2 - 1

B. (f • g) (x) = 2x (x^2-1)

C. (g • f) (x) = 4x - 1

D. (g • f) (x) = 4x^2 - 1

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Answers (1)
  1. 1 June, 11:14
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    Answer: D

    Step-by-step explanation:

    f (x) = 2x g (x) = x² - 1

    f (g (x)) = 2 (x² - 1)

    = 2x² - 2

    g (f (x)) = (2x) ² - 1

    = 4x² - 1
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