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29 March, 23:20

Note: Enter your answer and show all the steps that you use to solve this problem in the space provided. f (x) = 9 x 3 + 2 x 2 - 5 x + 4 and g (x) = 5 x 3 - 7 x + 4. what is f (x) - g (x) ? Show all of your steps and write your final answer in factored form.

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  1. 30 March, 01:48
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    The answer is 4x³ + 2x² + 2x = 2x (2x² + x + 1)

    Step-by-step explanation:

    ∵ f (x) = 9x³ + 2x² - 5x + 4

    ∵ g (x) = 5x³ - 7x + 4

    ∴ f (x) - g (x) = (9x³ + 2x² - 5x + 4) - (5x³ + 0 - 7x + 4)

    = (9x³ - 5x³) + (2x² - 0) + (-5x + 7x) + (4 - 4)

    = 4x³ + 2x² + 2x = 2x (2x² + x + 1)
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