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28 July, 07:50

F (x) = 9x^2-5x, g (x) = 19x-4

(fog) (9)

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Answers (2)
  1. 28 July, 10:38
    0
    Is it (fog) (9) or (fog) (x) ?
  2. 28 July, 11:13
    0
    F (x) = 9x² - 5x

    g (x) = 19x - 4

    (f о g) (9) = 9[19 (9) - 4]² - 5[19 (9) - 4]

    (f ο g) (9) = 9 (171 - 4) ² - 5 (174 - 4)

    (f ο g) (9) = 9 (167) ² - 5 (167)

    (f ο g) (9) = 9 (27889) - 865

    (f ο g) (9) = 251001 - 865

    (f ο g) (9) = 250136
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