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

iheartfood Group Title

Solve the polynomial equation... (inside!) Please show work!! and explain! Thanks!! :)

  • 2 years ago
  • 2 years ago

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

    |dw:1352180620990:dw|

    • 2 years ago
  2. .Sam. Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    You have to find one root, then use long division to factor the polynomial.

    • 2 years ago
  3. iheartfood Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    can u please show me how? idk how to find it :(

    • 2 years ago
  4. .Sam. Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    Are you allowed to use a scientific calculator in your exams?

    • 2 years ago
  5. iheartfood Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    yes I'm allowed to :) this is a practice worksheet and i need to show my work :/ and idk how to solve much less show work lol :/

    • 2 years ago
  6. iheartfood Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    do u understand how to solve this? cuz i am lost :(

    • 2 years ago
  7. .Sam. Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    I would use trial an error from calculator, you key the equation into your calculator, then substitute any number for x and see if its equal to zero, if that value of x equals to zero, then that is the factor of the polynomial

    • 2 years ago
  8. .Sam. Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    Ok, according to the trial an error, x=8 works, so, f(8)=15(8)^3-119(8)^2-10(8)+16=0

    • 2 years ago
  9. .Sam. Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    Now, x=8, (x-8) is a factor of that polynomial. then use this to find other factors, by long division.

    • 2 years ago
  10. iheartfood Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    so, what exactly am i dividing?? and can you please type or draw out all the work in order?? :) i understand better that way :)

    • 2 years ago
  11. .Sam. Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    You are dividing (x-8)

    • 2 years ago
  12. .Sam. Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    Because x=8 for the f(x) is zero

    • 2 years ago
  13. iheartfood Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    okay, so I'm dividing 15x^3-119x^2-10x+16 divided by x-8?

    • 2 years ago
  14. .Sam. Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    Yes

    • 2 years ago
  15. iheartfood Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    k i got 15x^2+x-2... so is that my answer?? :)

    • 2 years ago
  16. iheartfood Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    @.Sam. is that my answer???

    • 2 years ago
  17. .Sam. Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    yes

    • 2 years ago
  18. iheartfood Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    kk thanks! :)

    • 2 years ago
  19. iheartfood Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    can u pls help me with another one>? :)

    • 2 years ago
  20. .Sam. Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    But if they tell you to solve, that means you have to find x from 15x^2+x-2

    • 2 years ago
  21. .Sam. Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    Use factor or quadratic equation or completing the square to solve 15x^2+x-2

    • 2 years ago
  22. iheartfood Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    kk thanks!! :)

    • 2 years ago
  23. .Sam. Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    welcome

    • 2 years 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.