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

kelsey1

How do you find all the zeros of the function: f(x)=x^4-x^3+2x^2-4x-8

  • one year ago
  • one year ago

  • This Question is Open
  1. kelsey1
    Best Response
    You've already chosen the best response.
    Medals 0

    @timo86m

    • one year ago
  2. timo86m
    Best Response
    You've already chosen the best response.
    Medals 1

    Factor or graph.

    • one year ago
  3. kelsey1
    Best Response
    You've already chosen the best response.
    Medals 0

    can you show me how to factor this problem

    • one year ago
  4. timo86m
    Best Response
    You've already chosen the best response.
    Medals 1

    factored (x-2)*(x+1)*(x^2+4) ^ notice here you have to take negative sqrt of a the number so it is 2 imaginaries. {x = 2}, {x = -1}, {x = 2*I}, {x = -2*I}

    • one year ago
  5. kelsey1
    Best Response
    You've already chosen the best response.
    Medals 0

    isn't x^2+4 prime?

    • one year ago
  6. kelsey1
    Best Response
    You've already chosen the best response.
    Medals 0

    Oh okay http://answers.yahoo.com/question/index?qid=20091115111403AAnQ7Zk I see what you did there :) Gracias!!!!

    • one year ago
  7. timo86m
    Best Response
    You've already chosen the best response.
    Medals 1

    De nada :D

    • 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.