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18 March, 08:01

Solve x^2+6x+15=0 using the quadratic formula

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Answers (2)
  1. 18 March, 08:02
    0
    No real solutions is your answer
  2. 18 March, 08:21
    0
    X = [-b±√b²-4ac]/2a

    x = [-6±√{6² - 4*1*15} / 2*1

    x = [-6±√ (36 - 60) ]/2

    x = [-6±√-24]/2

    x = [-6± í2√6] / 2

    x = - 3±2√6ì

    x = - 3+2√6ì or x = - 3-2√6ì

    where ì = √-1
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