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5 April, 12:08

Find the zeros of the function.

f (x) = 3x^3 - 12x^2 - 15x

a. 0, 1, and - 5

b. - 1 and 5

c. 0, - 1, and 5

d. 1 and - 5

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Answers (1)
  1. 5 April, 12:21
    0
    F (x) = 3x³ - 12x² - 15x

    1) Factor Outside: 3x (x² - 4x - 5)

    Factor Inside: 3x (x + 1) (x - 5)

    2) Set Equal To 0:

    3x = 0

    x + 1 = 0

    x - 5 = 0

    3) Solve:

    x = 0, - 1, 5
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