A community for students.

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

anonymous

  • 5 years ago

Divide: (2x^5+4x^3-5x^2+3x-2) divison sign (x^2+2x-3)

  • This Question is Closed
  1. anonymous
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    Do you know how to long divide?

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

    No.

  3. anonymous
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    Is that what you are studying? I don't want to show you if that is not what you are doing.

  4. anonymous
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    Yeah it is.. but I am having trouble with it.

  5. anonymous
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    OK... first of all look at the first polynomial... look at their exponents. you see. x^5 then x^3 then x^2 then x then -2 Do you see that x^4 is missing?

  6. anonymous
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    Yes.

  7. anonymous
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    You put in zero for it.

  8. anonymous
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    OK we will have to put in 0 of those because that is how this works. Also... in the x^2 + 2x - 3 nothing is missing because we have x^2 and 2x OK.. here we go.

  9. anonymous
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    ------------------------------------- x^2 + 2x - 3 | 2x^5 + 0x^4 + 4x^3 - 5x^2 + 3x - 2 what do we need to multiply x^2 by to get 2x^5?

  10. anonymous
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    2x^3

  11. anonymous
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    Wait no.

  12. anonymous
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    2x^4

  13. anonymous
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    Good... 2x^3 ------------------------------------- x^2 + 2x - 3 | 2x^5 + 0x^4 + 4x^3 - 5x^2 + 3x - 2 as soon as you enter a number up top you multiply it by everything on the left .. you distribute

  14. anonymous
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    Oh I was right. hAHA

  15. anonymous
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    2x^3 ------------------------------------- x^2 + 2x - 3 | 2x^5 + 0x^4 + 4x^3 - 5x^2 + 3x - 2 2x^5 + 4x^4 - 6x^3 ------------------- OK?

  16. anonymous
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    Yes...

  17. anonymous
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    Once you multiply... (distribute) you draw a line and then change the signs of every term on the bottom and then add the terms and then bring down the next term. 2x^3 ------------------------------------- x^2 + 2x - 3 | 2x^5 + 0x^4 + 4x^3 - 5x^2 + 3x - 2 - 2x^5 - 4x^4 + 6x^3 ------------------- -4x^4 + 10x^3 - 5x^2 OK? and then we do the process again (notice that I changed every term on the polynomial before I added.)

  18. anonymous
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    2x^3 ------------------------------------- x^2 + 2x - 3 | 2x^5 + 0x^4 + 4x^3 - 5x^2 + 3x - 2 - 2x^5 - 4x^4 + 6x^3 ------------------- -4x^4 + 10x^3 - 5x^2 What do you need to multiply x^2 by to get -4x^4?

  19. anonymous
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    umm 2x^2?

  20. anonymous
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    2x^3 - 2x^2 ------------------------------------- x^2 + 2x - 3 | 2x^5 + 0x^4 + 4x^3 - 5x^2 + 3x - 2 - 2x^5 - 4x^4 + 6x^3 ------------------- -4x^4 + 10x^3 - 5x^2 -4x^4 - 4x^3 + 6x^2 -------------------- No.. -2x^2 you need the - sign. So I multiplied, drew the line, now change every sign on the bottom, add and bring down the next term.

  21. anonymous
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    6x^3-1x^2

  22. anonymous
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    2x^3 - 2x^2 + 14x - 29 R. 103x - 89 ------------------------------------- x^2 + 2x - 3 | 2x^5 + 0x^4 + 4x^3 - 5x^2 + 3x - 2 - 2x^5 - 4x^4 + 6x^3 ------------------- -4x^4 + 10x^3 - 5x^2 +4x^4 + 4x^3 - 6x^2 -------------------- 14x^3 - x^2 + 3x -14x^3 - 28x^2 + 42x ------------------ -29x^2 + 45x - 2 +29x^2 + 58x - 87 ------------------ 103x - 89 Now x^2 times what is 14x^3 answer + 14x I put that on top, multiplied, drew the line, changed the signs, added, brought down the next term. Now x^2 times what is -29x^2 answer -29 I put that on top, multiplied, drew the line, changed the signs, added, brought down the next term Then what is leftover is the remainder. Do you understand?

  23. anonymous
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    In our last post... you forgot to change the signs before you added.

  24. anonymous
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    Sorry.. in YOUR last post.

  25. anonymous
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    Hmm I guess.

  26. anonymous
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    Do you want me to go back and start from my post before the answer and go slowly?

  27. Not the answer you are looking for?
    Search for more explanations.

    • Attachments:

Ask your own question

Sign Up
Find more explanations on OpenStudy
Privacy Policy

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.