Results 1 to 2 of 2

Thread: Binomials and nCr notations

  1. #1
    New Member
    Join Date
    Oct 2017
    HSC
    N/A
    Gender
    Undisclosed
    Posts
    1
    Rep Power
    0

    Question Binomials and nCr notations

    I have no idea how to do them, please help me solve these questions.

    1) nC1+nC2=3n
    2)Find the constant term in the expansion of (x+2)6((1/x2)-1)2

    And finally,
    3) Given that (2+(x/10))n=1024+ax+bx2+terms involving higher powers of x.
    (a) Find the value of n.
    (b) Find the values of a and b.

    These questions are actually really basic and I know that..........but I just keep getting the wrong answers, anyone who can solve them is literally my superstar. (orz)
    Last edited by Narkis; 8 Oct 2017 at 6:56 PM.

  2. #2
    Loquacious One
    Join Date
    Feb 2009
    HSC
    N/A
    Gender
    Male
    Posts
    3,633
    Rep Power
    9

    Re: Binomials and nCr notations




    3)

    Last edited by Drongoski; 9 Oct 2017 at 10:58 PM.
    1-on-1 Maths Tutoring(IB & HSC): Epping, Beecroft, Eastwood, Carlingford & Beyond
    IB: Maths Studies, Maths SL & Maths HL; HSC: 2U, 3U & 4U
    Highly Qualified & Highly Experienced. Estimated ATAR > 9.995
    There are IB Maths Tutors and there are IB Maths Tutors.

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •