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

giulsvalentini Group Title

expand (2x-1)^5

  • one year ago
  • one year ago

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

    calculate (2x-1)^5

    • one year ago
  2. Xavier1 Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    ( 2x - 3y )4 = (2x)4 + 4(2x)3(-3y) + 6(2x)2(-3y)2 + 4(2x)(-3y)3 + (-3y)4

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

    32x^5 - 80x^4 + 80x^3 - 40x^2 +10x - 1

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

    10x - 5 because: you multiply the numbers inside the parenthesis by the exponent of 5 so, 2x multiplied by 5 is 10x and -1 by 5 to get -5...

    • one year ago
  5. timo86m Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    binomial theory, or binomial expansion i forget what it is called.

    • one year ago
  6. Peter14 Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    this is just a busy work problem. MrSensitive has the right answer. @giulsvalentini do you know how to do it or do you need us to explain it to you?

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

    I have to use the Triangolo di Trataglia, di you know it? sorry for my English, I'm Italian :) @Peter14

    • one year ago
  8. Peter14 Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    Pascal's triangle? yes, I know it

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

    so I have to apply th formule of the development of i don't know do you say power (a^n)?

    • one year ago
  10. timo86m Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    http://www.mathsisfun.com/algebra/binomial-theorem.html it's the binomial theorem.

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

    exactly! @timo86m

    • one year ago
  12. timo86m Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    link explains it very well.

    • one year ago
  13. Peter14 Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    if you don't know how to say something in english say it in italian. I know spanish so I could understand, and if I don't there's always google translate

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

    I think today I won't do my math's homeworks.

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

    Thank you @timo86m

    • one year ago
  16. Peter14 Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    you're skipping a day of math homework? it will only be harder tomorrow...

    • one year ago
  17. Peter14 Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    @giulsvalentini I will help...

    • 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.