Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

smarty

  • 3 years ago

Describe the nature of the roots of the equation 2x^2 + 3x = –3.

  • This Question is Closed
  1. Nancy_Lam
    • 3 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    \[\frac{-b \pm \sqrt{b^2-4ac}}{2a}\] a=2 b=3 c=3 subtitution and solve

  2. sritama
    • 3 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    imaginary numbers

  3. smarty
    • 3 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    one real root two real roots two imaginary roots cannot be determined

  4. smarty
    • 3 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    So C? two imaginary roots?

  5. smarty
    • 3 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    @Nancy_Lam

  6. sritama
    • 3 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    yeah

  7. smarty
    • 3 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    Thanks~

  8. smarty
    • 3 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    what about: 7x^2 = 4x + 1.

  9. smarty
    • 3 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    @sritama

  10. Nancy_Lam
    • 3 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    two imaginary roots

  11. smarty
    • 3 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    How can you tell?

  12. smarty
    • 3 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    For ex: x^2 – 4x + 4 = 0. how would you tell for that one?

  13. sritama
    • 3 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    for the 2nd equation it is b

  14. sritama
    • 3 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    7x^2 = 4x + 1 , i mean

  15. smarty
    • 3 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    haha alright what about : x^2 – 4x + 4 = 0

  16. sritama
    • 3 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    two real roots,and they are same

  17. Nancy_Lam
    • 3 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    x^2 – 4x + 4 = 0 (x-2)^2

  18. sritama
    • 3 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    all you have to get from the value of \[\sqrt{b^2-4ac}\]

  19. smarty
    • 3 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    Ohok. thanks!

  20. smarty
    • 3 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    So the root of hte discriminant.

  21. sritama
    • 3 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    if the value is negatives, roots are imaginary if positive . roots are real if 0,roots are real and same

  22. sritama
    • 3 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    yeah

  23. Not the answer you are looking for?
    Search for more explanations.

    • Attachments:

Ask your own question

Sign Up
Find more explanations on OpenStudy
Privacy Policy