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

Christos

Can you teach me how to do long division?

  • 11 months ago
  • 11 months ago

  • This Question is Closed
  1. Luigi0210
    Best Response
    You've already chosen the best response.
    Medals 1

    Any specific examples..?

    • 11 months ago
  2. smokeydabear
    Best Response
    You've already chosen the best response.
    Medals 0

    I can teach you my more kid-friendly approach to long division, if that's okay with you.

    • 11 months ago
  3. Christos
    Best Response
    You've already chosen the best response.
    Medals 0

    2x^3-3x^2-36x+5

    • 11 months ago
  4. smokeydabear
    Best Response
    You've already chosen the best response.
    Medals 0

    Oh that sort of long division... Yeah I always forget that. Luigi, I summon thee!

    • 11 months ago
  5. Luigi0210
    Best Response
    You've already chosen the best response.
    Medals 1

    What are you dividing it by?

    • 11 months ago
  6. Christos
    Best Response
    You've already chosen the best response.
    Medals 0

    diving by x - 5

    • 11 months ago
  7. Luigi0210
    Best Response
    You've already chosen the best response.
    Medals 1

    There's an easier way. Have you learned synthetic division?

    • 11 months ago
  8. Christos
    Best Response
    You've already chosen the best response.
    Medals 0

    No can you teach me please

    • 11 months ago
  9. Luigi0210
    Best Response
    You've already chosen the best response.
    Medals 1

    Synthetic division is like upside down division. So for the problem \[\frac{ 2x^3-3x^2-36x+5 }{ x-5 }\] It would look like this: |dw:1368504397441:dw|

    • 11 months ago
  10. Christos
    Best Response
    You've already chosen the best response.
    Medals 0

    the result is 2x^3+7x-1 ?

    • 11 months ago
  11. Luigi0210
    Best Response
    You've already chosen the best response.
    Medals 1

    no 2x^2

    • 11 months ago
  12. Christos
    Best Response
    You've already chosen the best response.
    Medals 0

    can you explain to me how you got those numbers at your image

    • 11 months ago
  13. Christos
    Best Response
    You've already chosen the best response.
    Medals 0

    These ones http://screencast.com/t/lqjFKcJA

    • 11 months ago
  14. Luigi0210
    Best Response
    You've already chosen the best response.
    Medals 1

    For synthetic division first what you do is solve for x: x-5=0 x=5 -------------------------------------------------- Now just take the coefficients of the equation and plug them in. When it is set up you then drop the first number, like in the example we dropped the 2. Next we would multiply it by 5 and add it to the next coefficient and then repeat. So 5*2 is 10. and -3+10 is 7.and 7*5 is 35. 35+-36 which is -1. and -1*5 is -5 and so on

    • 11 months ago
  15. Christos
    Best Response
    You've already chosen the best response.
    Medals 0

    thank you

    • 11 months ago
  16. Luigi0210
    Best Response
    You've already chosen the best response.
    Medals 1

    Synthetic division only works with linear equations.

    • 11 months ago
  17. Christos
    Best Response
    You've already chosen the best response.
    Medals 0

    what do you mean by "linear" ?

    • 11 months ago
  18. Christos
    Best Response
    You've already chosen the best response.
    Medals 0

    @Luigi0210

    • 11 months ago
  19. Luigi0210
    Best Response
    You've already chosen the best response.
    Medals 1

    Like you can't use this method if you're dividing by like x^2 and beyond. It only works with x+5, x-2, 5x+9, etc.

    • 11 months ago
  20. Christos
    Best Response
    You've already chosen the best response.
    Medals 0

    I see :)

    • 11 months 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.