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9 June, 08:56

If c (x) = 4x - 2 and d (x) = x2 + 5x, what is (c o d) ?

A. 4x3 + 18x2 - 10x

B. x2 + 9x - 2

C. 16x2 + 4x - 6

D. 4x2 + 20x - 2

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Answers (1)
  1. 9 June, 10:41
    0
    (c o d) (x) = c (d (x)) = 4 (x^2 + 5x) - 2

    = 4x^2 + 20x - 2

    answer

    D. 4x^2 + 20x - 2
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