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31 December, 06:27

For f (x) = 2x + 1 and g (x) = x2 - 7, find (f. g) (x).

O A. 2x3 + x2 - 14x - 7

O B. 3x2 + 7x - 6

O C. 2x2 - 13

O D. 2x2 - 3573-7

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  1. 31 December, 06:53
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    Step-by-step explanation:

    (f. g) (x) = (2x + 1) (x² - 7)

    = 2x*x² + 2x * (-7) + 1*x² + 1 * (-7)

    =2x³ - 14x + x² - 7

    =2x³ + x² - 14x - 7
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