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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. mathmate
    • one year ago
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    Can you identify the values of a, b and c as @pooja195 showed you?

  2. mathmate
    • one year ago
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    You'll need them to calculate the discriminant, which in turn is necessary to find the number of real/complex roots.

  3. anonymous
    • one year ago
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    no real number trust me im in college I took all about this

  4. anonymous
    • one year ago
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    3x^2,6x and 4

  5. anonymous
    • one year ago
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    @mathmate

  6. anonymous
    • one year ago
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    are you there? @mathmate

  7. mathmate
    • one year ago
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    The powers of x do not count, because it comes from ax^2+bx+c, so a,b,c do not contain the powers of x, just the coefficients will do.

  8. anonymous
    • one year ago
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    ok

  9. mathmate
    • one year ago
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    But you need to include the signs, so it is a=3, b=-6 c=4

  10. mathmate
    • one year ago
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    Can you look up the formula for discriminant, which @pooja195 gave you?

  11. anonymous
    • one year ago
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    ummm, where do i get that? shes ofline im prety sure!!

  12. mathmate
    • one year ago
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    Your previous post.

  13. anonymous
    • one year ago
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    it doesnt let me for some reason , can you try??

  14. mathmate
    • one year ago
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    ok, you'll be needing this for you test or exam, so try to get familiar with it, if you can: discriminant = \(b^2-4ac\)

  15. anonymous
    • one year ago
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    ok

  16. mathmate
    • one year ago
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    if the discriminant is negative, all roots are complex. If the discriminant is positive, there will be two distinct (different) real roots if the discriminant is zero, there will be two coincident (same value) real roots.

  17. anonymous
    • one year ago
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    okayyy!

  18. anonymous
    • one year ago
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    so my guess is c? @mathmate

  19. mathmate
    • one year ago
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    Please do not guess! Did you calculate the determinant?

  20. mathmate
    • one year ago
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    * discriminant

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