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anonymous

  • one year ago

Calculate the discriminant and use it to determine how many real-number roots the equation has. 3x2 – 6x + 4 = 0 A. three real-number roots B. no real-number roots C. one real-number root D. two real-number roots

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  1. anonymous
    • one year ago
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    @jagr2713

  2. anonymous
    • one year ago
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    @pooja195

  3. anonymous
    • one year ago
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    @JoKeR0331 @KevinM.Williams159 @Lady.Liv1776 @Legends @sleepyjess @k142 @dan815 @desiraem @Samus_Aran

  4. anonymous
    • one year ago
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    Three

  5. anonymous
    • one year ago
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    I think?

  6. anonymous
    • one year ago
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    can you tag someone else to see what they think to??

  7. anonymous
    • one year ago
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    @Loser66

  8. anonymous
    • one year ago
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    Can't be 3. the highest exponent is 2, so you there can only be 0, 1, or 2 solutions. The discriminant is b² - 4ac. - If b² - 4ac = 0, there is 1 solution. - If b² - 4ac is positive, there are 2 solutions. - If b² - 4ac is negative, there are 0 solutions.

  9. anonymous
    • one year ago
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    my answer whould be c?

  10. anonymous
    • one year ago
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    @peachpi

  11. anonymous
    • one year ago
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    No. What did you get for the discriminant.

  12. anonymous
    • one year ago
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    sorry, i meant to say d!:)

  13. Loser66
    • one year ago
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    I am with peachpi. They asked you to find discriminant. You MUST have it first.

  14. anonymous
    • one year ago
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    i am not sure how to do that, will you helpme??

  15. anonymous
    • one year ago
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    For the equation ax² + bx + c = 0, the discriminant is b² - 4ac. For your equation, a = 3, b = -6, and c = 4.

  16. anonymous
    • one year ago
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    okay

  17. anonymous
    • one year ago
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    So what's b²-4ac?

  18. anonymous
    • one year ago
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    um is that the abc equation?? @peachpi

  19. anonymous
    • one year ago
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    I'm not sure what the a,b,c equation is. I gave you the numbers above. You just need to plug them into the expression b²-4ac to get the discriminant.

  20. anonymous
    • one year ago
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    -6^2-4(3)(4) @peachpi

  21. anonymous
    • one year ago
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    is this correct? @peachpi

  22. anonymous
    • one year ago
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    yes and now you need to simplify it to a single number.

  23. anonymous
    • one year ago
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    |dw:1433034729464:dw|

  24. anonymous
    • one year ago
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    @peachpi

  25. anonymous
    • one year ago
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    ok. in my first response I listed all the possible scenarios. How many solutions does your equation have?

  26. anonymous
    • one year ago
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    1 @peachpi

  27. anonymous
    • one year ago
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    Which is your discriminant: positive, negative, or 0?

  28. anonymous
    • one year ago
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    negative

  29. anonymous
    • one year ago
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    ok. so looking above, how many solutions are there for a negative discriminant?

  30. anonymous
    • one year ago
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    one?

  31. anonymous
    • one year ago
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    - If b² - 4ac = 0, there is 1 solution. - If b² - 4ac is positive, there are 2 solutions. - If b² - 4ac is negative, there are 0 solutions.

  32. anonymous
    • one year ago
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    no solutions

  33. anonymous
    • one year ago
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    right

  34. anonymous
    • one year ago
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    so b?

  35. anonymous
    • one year ago
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    @peachpi

  36. anonymous
    • one year ago
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    yep

  37. anonymous
    • one year ago
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    https://www.wolframalpha.com/input/?i=factor++3x2+%E2%80%93+6x+%2B+4+%3D+0

  38. anonymous
    • one year ago
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    no real roots

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