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anonymous

  • 5 years ago

need help finishing up this quadratic equation!

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  1. anonymous
    • 5 years ago
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    \[-7y ^{2}+4y-2=0\]

  2. anonymous
    • 5 years ago
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    I am at \[-4 + or - \sqrt{-40} \over -14\] Any one able to help me with where to go from here? and whether this is correct or not?

  3. anonymous
    • 5 years ago
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    it doesn't look right since you suppose to have a real number. Can you please show us the original function.

  4. anonymous
    • 5 years ago
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    I checked it and it's right. The only thing I can see to do is that radical... It would come out as 2 times the root of ten.

  5. anonymous
    • 5 years ago
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    would the 2 and 10 be positive or negative?

  6. anonymous
    • 5 years ago
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    sorry, 2i times the root of ten (:

  7. anonymous
    • 5 years ago
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    okk awesome. Thanks. is the denominator positive 14 then? so my 2 answers would be, \[-4+ or - \sqrt{2i} over 14\] and the second answer would be the same, except root 10 instead of 2?

  8. anonymous
    • 5 years ago
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    sorry, I just am not sure exactly what the answer should look like, i have to answer it in an online assignment and i wanna make sure to get the right format

  9. anonymous
    • 5 years ago
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    \[-4 + or - 2i \sqrt{10}\over -14\]

  10. anonymous
    • 5 years ago
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    sorry it took so long. But this counts as two answers since it's + or - as well.

  11. anonymous
    • 5 years ago
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    that's ok. thanks!

  12. anonymous
    • 5 years ago
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    yup :D

  13. anonymous
    • 5 years ago
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    and are they non real?

  14. anonymous
    • 5 years ago
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    since theres a negative number i assume so

  15. anonymous
    • 5 years ago
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    i'm not quite sure but i'd say since there's an imaginary number in there, it's nonreal.

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