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22 September, 13:47

Suppose that the functions p and q are defined as follows.

p (x) = - x - 1

q (x) = 2x² - 2

Find the following.

(q º p) (-4) =

(q º p) (-4) =

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Answers (1)
  1. 22 September, 15:29
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    P (x) = - x - 1

    q (x) = 2x^2 - 2

    (q o p) (-4) = 2 (-x - 1) ^2 - 2

    (q o p) (-4) = 2 (-x^2 + x + x + 1) - 2

    (q o p) (-4) = 2 (-x^2 + 2x + 1) - 2

    (q o p) (-4) = - 2x^2 + 4x + 2 - 2

    (q o p) (-4) = - 2x^2 + 4x
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