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anonymous

  • 5 years ago

need help with quadric equations please !

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  1. anonymous
    • 5 years ago
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    \[-1 +/- \sqrt{-15}/ 2\]

  2. anonymous
    • 5 years ago
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    what is the equation?

  3. anonymous
    • 5 years ago
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    I just listed it above--I already filled in the numbers and broke it down the the best of my ability. it is simplifying radicals on the right side that I am stuck on...

  4. anonymous
    • 5 years ago
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    the +/- part is where they are a fraction--one over the other. did not find a button to set it up that way. haha don't want to cause any confusion. the other slash line is the fraction line where 2 is the denom

  5. anonymous
    • 5 years ago
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    \[(-1+i \sqrt{15})/2\] and \[(-1-i \sqrt{15})/2\]

  6. anonymous
    • 5 years ago
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    the answer was -1, -4

  7. anonymous
    • 5 years ago
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    how did they get that?

  8. anonymous
    • 5 years ago
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    The original problem was x^2+5x+4?

  9. anonymous
    • 5 years ago
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    If so then the quadratic equation says: [-5+-√(5^2-4(1)(4))] / 2(1) (-5+-√(25-16))/2 (-5+-√(9)) / 2 (-5+-3)/2 which is x = -1, -4

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spraguer (Moderator)
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