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8 July, 22:29

f (x) = x - 2 and g (x) = x2 - 7x - 9. Find f (g (-1))

A. - 21

B.-3

C. 3

D. 21

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Answers (1)
  1. 8 July, 23:18
    0
    Hello:

    g (-1) = (-1) ² - 7 (-1) - 9 = 1+7-9 = - 1

    f (g (-1)) = f (-1) = - 1-2 = - 3 ... (answer : B)
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