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2 June, 12:24

Select the approximate values of x that are solutions to f (x) = 0, where

f (x) = - 3x2 + 3x + 9.

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Answers (1)
  1. 2 June, 14:24
    0
    F (x) = 3x² + 3x + 9

    3x² + 3x + 9 = 0

    x = - (3) + / - √ ((3) ² - 4 (3) (9))

    2 (3)

    x = - 3 + / - √ (9 - 108)

    6

    x = - 3 + / - √ (99)

    6

    x = - 3 + / - 3√ (11)

    6

    x = - 0.5 + 0.5√ (11)

    x = - 0.5 + 0.5√ (11) x = - 0.5 - 0.5√ (11)
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