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10 October, 04:00

The domain for f (x) and g (x) is the set of all real numbers.

Let f (x) = 2x2 + x - 3 and g (x) = x + 2.

Find (f•g) (x).

2x3 + 5x2 - x-6

2x3 - 5x2 + 6

x2 - 4x + 3

2x3 - x2 + 4x - 3

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Answers (1)
  1. 10 October, 04:04
    0
    it's the first choice: 2x^3 + 5x^2 - x - 6.

    Step-by-step explanation:

    (f•g) (x)

    = f (x) * g (x)

    = (x + 2) (2x^2 + x - 3)

    = 2x^3 + x^2 - 3x + 4x^2 + 2x - 6

    = 2x^3 + 5x^2 - x - 6.
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