Results 1 to 2 of 2

Math Help - Algebra simplification - don't understand

  1. #1
    Newbie
    Joined
    May 2012
    From
    United States
    Posts
    1

    Algebra simplification - don't understand

    Hi

    I'm working on a textbook mathematical induction problem - part of which involves an algebra simplification that I don't understand.
    Just wondering if anyone can explain how they get to the right hand side?


    ((k-1)(k-1 +1) (2(k-1)+1)) /6 = ((k-1) k(2k - 1)) /6



    I don't understand how they managed to ditch so many ks and other numbers.
    I don't get algebra at all so the most basic explanation would be good.

    Thanks
    Follow Math Help Forum on Facebook and Google+

  2. #2
    MHF Contributor

    Joined
    Apr 2005
    Posts
    16,419
    Thanks
    1855

    Re: Algebra simplification - don't understand

    Quote Originally Posted by jooby View Post
    Hi

    I'm working on a textbook mathematical induction problem - part of which involves an algebra simplification that I don't understand.
    Just wondering if anyone can explain how they get to the right hand side?


    ((k-1)(k-1 +1) (2(k-1)+1)) /6 = ((k-1) k(2k - 1)) /6
    It's largely arithmetic. For example, -1+ 1= 0 so that middle term is k-1+ 1= k. And 2(k- 1)= 2k- 2 so that 2(k-1)+1= 2k- 2+ 1= 2k- 1.



    I don't understand how they managed to ditch so many ks and other numbers.
    I don't get algebra at all so the most basic explanation would be good.

    Thanks
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. Replies: 1
    Last Post: August 25th 2011, 06:09 AM
  2. Algebra Simplification
    Posted in the Algebra Forum
    Replies: 1
    Last Post: April 20th 2011, 12:30 PM
  3. Boolean Algebra Simplification
    Posted in the Algebra Forum
    Replies: 1
    Last Post: February 18th 2010, 08:02 PM
  4. Boolean algebra simplification help
    Posted in the Discrete Math Forum
    Replies: 3
    Last Post: January 15th 2009, 07:16 AM
  5. Simplification of boolean algebra
    Posted in the Discrete Math Forum
    Replies: 4
    Last Post: January 12th 2009, 02:05 AM

Search Tags


/mathhelpforum @mathhelpforum