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15 March, 03:12

Solve for x in the equation x squared minus 4 x minus 9 = 29. x = 2 plus-or-minus StartRoot 42 EndRoot x = 2 plus-or-minus StartRoot 33 EndRoot x = 2 plus-or-minus StartRoot 34 EndRoot x = 4 plus-or-minus StartRoot 42 EndRoot

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  1. 15 March, 05:04
    0
    the answer is A on edg2020
  2. 15 March, 06:43
    0
    The correct answer is A. x = 2 + / - √42

    Step-by-step explanation:

    Let's solve for x the quadratic equation, this way:

    x² - 4x - 9 = 29

    x² - 4x - 38 = 0

    Using the quadratic formula, we have:

    x = [ - (-4) + / - √ - 4² - 4 * - 38]/2

    x = 4 + / - √ 16 + 152/2

    x = 4 + / - √ 168/2

    x = 4 + / - √ 4 * 42/2

    x = 4 + / - 2 √42/2

    x = 2 + / - √42

    The correct answer is A. x = 2 + / - √42
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