Results 1 to 5 of 5
Like Tree1Likes
  • 1 Post By InteGrand

Thread: factorisation question

  1. #1
    Cadet
    Join Date
    Aug 2017
    HSC
    2019
    Gender
    Male
    Posts
    26
    Rep Power
    1

    factorisation question

    x2+6x-y2-8y-7
    | Physics | Chemistry | Ext 1 Mathematics | Economics | Advanced English | SOR I |

  2. #2
    Rambling Spirit
    Join Date
    Dec 2014
    HSC
    N/A
    Gender
    Male
    Posts
    6,048
    Rep Power
    7

    Re: factorisation question

    Quote Originally Posted by Aviator_13 View Post
    x2+6x-y2-8y-7


    Drongoski likes this.

  3. #3
    Cadet
    Join Date
    Aug 2017
    HSC
    2019
    Gender
    Male
    Posts
    26
    Rep Power
    1

    Re: factorisation question

    What do you mean by inspection? I know the answer to the question lmao. I just don't know how to get it.
    | Physics | Chemistry | Ext 1 Mathematics | Economics | Advanced English | SOR I |

  4. #4
    617 pages fan96's Avatar
    Join Date
    May 2017
    HSC
    2018
    Gender
    Male
    Location
    NSW
    Posts
    318
    Rep Power
    1

    Re: factorisation question

    "By inspection" means "by looking at it", basically. So if you were asked to solve then you'd probably know by inspection the answer is without actually factorising it.



    Trying to complete the square actually works out perfectly here.







    Last edited by fan96; 17 Feb 2018 at 9:41 AM.

  5. #5
    Cadet
    Join Date
    Aug 2017
    HSC
    2019
    Gender
    Male
    Posts
    26
    Rep Power
    1

    Re: factorisation question

    Ohhh I see...Thank you.
    | Physics | Chemistry | Ext 1 Mathematics | Economics | Advanced English | SOR I |

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
  •