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

stevejounson

Use the Rational Root Theorem to list all possible rational roots of the polynomial equation x3 – x2 – x – 3 = 0. Do not find the actual roots. (1 point) –3, –1, 1, 3 1, 3 –33 no roots

  • one year ago
  • one year ago

  • This Question is Closed
  1. stevejounson
    Best Response
    You've already chosen the best response.
    Medals 0

    i think it is a am i right yes or no

    • one year ago
  2. wio
    Best Response
    You've already chosen the best response.
    Medals 2

    \[a_n = 1 \quad a_0 = -3\]

    • one year ago
  3. wio
    Best Response
    You've already chosen the best response.
    Medals 2

    \[ \pm \frac{1,3}{1} = 1, 3, -1, -3 \]

    • one year ago
  4. wio
    Best Response
    You've already chosen the best response.
    Medals 2

    you're right, but what matters is the process you used.

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

    ok can u check another one for me

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

    What does Descartes's Rule of Signs tell you about the real roots of the polynomial? –2x3 + 3x2 – 5x – 2 = 0 (1 point) There is one positive root and either 2 or 0 negative roots. There are either 2 or 0 positive roots and there are either 2 or 0 negative roots. There is one positive root and one negative root. There are either 2 or 0 positive roots and one negative root. i think it c

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

    @wio am a right

    • one year ago
  8. wio
    Best Response
    You've already chosen the best response.
    Medals 2

    Well it has 3 roots. We know it has 2 or 0 positive roots.

    • one year ago
  9. stevejounson
    Best Response
    You've already chosen the best response.
    Medals 0

    so its d

    • one year ago
  10. wio
    Best Response
    You've already chosen the best response.
    Medals 2

    you didn't list d

    • one year ago
  11. stevejounson
    Best Response
    You've already chosen the best response.
    Medals 0

    aThere is one positive root and either 2 or 0 negative roots. bThere are either 2 or 0 positive roots and there are either 2 or 0 negative roots. cThere is one positive root and one negative root. dThere are either 2 or 0 positive roots and one negative root.

    • one year ago
  12. wio
    Best Response
    You've already chosen the best response.
    Medals 2

    d looks best.

    • one year ago
  13. stevejounson
    Best Response
    You've already chosen the best response.
    Medals 0

    ok i have 1 more

    • one year ago
  14. stevejounson
    Best Response
    You've already chosen the best response.
    Medals 0

    Find a third-degree polynomial equation with rational coefficients that has roots –4 and 6 + i. (1 point) x3 – 8x2 – 11x + 148 = 0 x3 – 8x2 – 12x + 37 = 0 x3 – 12x2 + 37x = 0 x3 – 8x2 – 11x = 0 i think this one is b or a

    • one year ago
  15. wio
    Best Response
    You've already chosen the best response.
    Medals 2

    Obviously it is a or b, since 0 is not a root.

    • one year ago
  16. stevejounson
    Best Response
    You've already chosen the best response.
    Medals 0

    so which one do u think it is im going with a

    • one year ago
  17. wio
    Best Response
    You've already chosen the best response.
    Medals 2

    can't you just plug 4 into one of them to find out?

    • one year ago
  18. lilmissthang1718
    Best Response
    You've already chosen the best response.
    Medals 0

    whats number 2 to this ?

    • 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.