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23 December, 05:54

What is the value of f ( - 3a), if f (x) = 2x 2 + 4x?

Select one:

a. 9a 2 - 12a

b. 4a 2 - 9a

c. 18a 2 - a

d. 18a 2 - 12a

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Answers (1)
  1. 23 December, 06:13
    0
    d. 18a² - 12a

    Step-by-step explanation:

    f (x) = 2x² + 4x

    f (-3a) = 2 (-3a) ² + 4 (-3a)

    2 (-3a) ² + 4 (-3a)

    2 (9a²) + (-12a)

    18a² - 12a
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