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anonymous

  • 5 years ago

i have to determine the number of solutions of this quadratic equation and solve it

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  1. anonymous
    • 5 years ago
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    whats the equation

  2. anonymous
    • 5 years ago
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    \[-4y ^{2}+3=-7y\]

  3. anonymous
    • 5 years ago
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    Well let's set that = 0 first (and, for ease, have it on the side so y^2 is positive)

  4. anonymous
    • 5 years ago
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    and it should be 2 answers if you are using the quadratic equation

  5. amistre64
    • 5 years ago
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    the number of solutions?

  6. anonymous
    • 5 years ago
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    yeah it's an online assignment so once I determine how many solutions and whither they are real or not I select that and type in the answers

  7. anonymous
    • 5 years ago
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    it's either 2 different real solutions or 2 non-real solutions

  8. amistre64
    • 5 years ago
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    the solutions are infinite and create a parabolic curve on a graph....

  9. anonymous
    • 5 years ago
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    Ugh, horrible, horrible radical solutions. I'm out. And isn't it just a quadratic with 2 (yes, I checked, there should be 2 real ones)

  10. amistre64
    • 5 years ago
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    or am I confusing definitions......

  11. amistre64
    • 5 years ago
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    if it equals zero, then there is at most 2 real solutions...youre right :)

  12. anonymous
    • 5 years ago
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    Sorry if i was confusing in my explanation. Basically i just need to solve that now. THanks

  13. amistre64
    • 5 years ago
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    -1(4y^2 -7y -3) = 0 4y^2 -7y -3 = 0 7/8 +- sqrt(49+48)/8

  14. anonymous
    • 5 years ago
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    ok so the 49 +48 makes 97. would this be put over 8, and the 7 is over 8 as well?

  15. amistre64
    • 5 years ago
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    yes.

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