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11 March, 08:34

F (x) = 3x - 4x2 + 6x and g (x) = 5x + 2x2 - 3x. What is f (x) g (x) ?

A) - 2x - 6x² + 9x

B) - 2x² - 6x² - 3x

C) 2x²+6x²+32

D) 8x2 - 6x2-9x

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Answers (1)
  1. 11 March, 11:19
    0
    f (x) g (x) = 9x² + 10x - 16

    Step-by-step explanation:

    Step 1:

    Given f (x) = 3x - 4 * 2 + 6x and g (x) = 5x + 2 * 2 - 3x

    f (x) = 9x - 8

    g (x) = 2x + 4

    f (x) g (x) = (9x - 8) (2x + 4)

    = 18x² + 36x - 16x - 32

    = 18x² + 20x - 32

    = 9x² + 10x - 16
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