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8 December, 09:56

For which value of m does the graph of y = 18x2 + mx + 2 have exactly one x-intercept?

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Answers (2)
  1. 8 December, 09:59
    0
    Y = 18 x² + m x + 2

    Exactly one x - intercept is for:

    D = m² - 4 · 18 · 2 = 0

    m² - 144 = 0

    m² = 144

    Answer:

    m = - 12 or m = 12
  2. 8 December, 10:05
    0
    The answer is the third option, 12.
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