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

babydoll332 Group Title

Find the remainder when f(x) is divided by (x - k) f(x) = 8x^4 + 7x^3 + 5x^2 - 5x + 35; k = 4

  • one year ago
  • one year ago

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

    use the remainder theorem, remainder = f(4) = .... (just plug x=4)

    • one year ago
  2. babydoll332 Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    4220

    • one year ago
  3. babydoll332 Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    @RadEn 4220

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

    Close

    • one year ago
  5. babydoll332 Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    2591

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

    What did you substitute for x?

    • one year ago
  7. babydoll332 Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    4

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

    yes, 2591

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

    Yep

    • one year ago
  10. ZeHanz Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    You can use synthetic division: 4 [ 8 7 5 -5 35 ] 32 156 644 2556 ------------------------+ 8 39 161 639 2591 <--- remainder Explanation of synthetic division: write out the coefficients of the powers of x, in the right order (8, 7, 5, -5 and 35) Put 4 in front (the value of k) the first coefficient, 8 goes straight down. Multiply 4 with 8, put 32 in the next column. Add the numbers: 39 Multiply 4 with 39, put 156 in the next column. Adding gives 161. Etc. the last number you get this way is the remainder!

    • 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.