1. Not finding help here? Sign up for a free 30min tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Xsquared - 11x - 42

  1. Oct 3, 2004 #1
    please please please please help!! really easy question but i'm stuck!

    I am sooooo stuck on this question in my maths homework! I know it's a really easy one probably but I can't seem to do it! It's about factorising,
    I don't know where the squared key on the p.c. is so im going to put squared after the x to represent x squared

    xsquared - 11x - 42

    I know because of the x squared it has to be two sets of brackets each with x in the front and it has to be two numbers that add to make -11 and times to make -42 I THINK

    please please please please please please please please please please help me!
     
  2. jcsd
  3. Oct 3, 2004 #2

    arildno

    User Avatar
    Science Advisor
    Homework Helper
    Gold Member
    Dearly Missed

    Welcome to PF!
    1. Cool down a bit, and answer first:
    What do you need to know in order to factorize a polynomial?
     
  4. Oct 3, 2004 #3
    ??? i'm only in year 9! but im going to delete this thread cos my dad just saved me! phew! :blushing:
     
  5. Oct 3, 2004 #4

    arildno

    User Avatar
    Science Advisor
    Homework Helper
    Gold Member
    Dearly Missed

    That was nice of him!
     
  6. Oct 3, 2004 #5
    yeah, sorry for wasting your time
     
  7. Oct 3, 2004 #6

    arildno

    User Avatar
    Science Advisor
    Homework Helper
    Gold Member
    Dearly Missed

    No problem!
    You might compare my answer with your Dad's:
    [tex]x^{2}-11x-42=(x-14)(x+3)[/tex]
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?