Quantcast

Got Homework?

Connect with other students for help. It's a free community.

  • across
    MIT Grad Student
    Online now
  • laura*
    Helped 1,000 students
    Online now
  • Hero
    College Math Guru
    Online now

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

MacPfister Group Title

If 2 + sqrt(3) is a polynomial root, name another root of the polynomial and explain how you know it must also be a root. (Explain in 1 or 2 sentences)

  • one year ago
  • one year ago

  • This Question is Open
  1. myininaya Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    I guess they are defining this polynomial to have real coefficients even though they didn't say that. So when you solve \[ax^2+bx+c=0\] You get \[x=\frac{-b \pm \sqrt{b^2-4ac}}{2a}\]. See of you can use that here. :)

    • one year ago
  2. myininaya Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    I'm also assuming that this polynomial has a quadratic factor. Such a weird question. Seems incomplete.

    • one year ago
  3. MacPfister Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    I need it in sentences.. :/ sorry

    • one year ago
  4. MacPfister Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    That doesn't answer the question either though, cause it's asking what would be another root if one of the polynomial roots is 2+ sqrt(3)

    • one year ago
  5. myininaya Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    Yes it does.

    • one year ago
  6. myininaya Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    That is 2 general solutions to a general quadratic above.

    • one year ago
  7. myininaya Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    A quadratic is a polynomial.

    • one year ago
    • Attachments:

See more questions >>>

Your question is ready. Sign up for free to start getting answers.

spraguer (Moderator)
5 → View Detailed Profile

is replying to Can someone tell me what button the professor is hitting...

23

  • Teamwork 19 Teammate
  • Problem Solving 19 Hero
  • You have blocked this person.
  • ✔ You're a fan Checking fan status...

Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.

This is the testimonial you wrote.
You haven't written a testimonial for Owlfred.