Results 1 to 7 of 7

Math Help - If x>2

  1. #1
    Newbie
    Joined
    Nov 2012
    From
    washington state
    Posts
    9

    If x>2

    If x>2 then x2-x-6 =
    x2-4
    can you show with steps please thank you!
    Follow Math Help Forum on Facebook and Google+

  2. #2
    Forum Admin topsquark's Avatar
    Joined
    Jan 2006
    From
    Wellsville, NY
    Posts
    9,962
    Thanks
    349
    Awards
    1

    Re: If x>2

    Quote Originally Posted by someguy123 View Post
    If x>2 then x2-x-6 =
    x2-4
    can you show with steps please thank you!
    Your question is a bit garbled. What's going on in the bottom line? Could you spell it out? (Or you can quickly look at the LaTeX forum.)

    -Dan
    Follow Math Help Forum on Facebook and Google+

  3. #3
    Newbie
    Joined
    Nov 2012
    From
    washington state
    Posts
    9

    Re: If x>2

    sorry the xsquared - 4 is supposed to be directly under i dont know what happened so xsquared-x-6/xsquared-4
    Follow Math Help Forum on Facebook and Google+

  4. #4
    Junior Member
    Joined
    Nov 2012
    From
    Hyrule
    Posts
    39
    Thanks
    10

    Re: If x>2

    Yes and there is something after "=" ?
    Follow Math Help Forum on Facebook and Google+

  5. #5
    Newbie
    Joined
    Nov 2012
    From
    washington state
    Posts
    9

    Re: If x>2

    no thats whats supposed to be figured out
    Follow Math Help Forum on Facebook and Google+

  6. #6
    Junior Member
    Joined
    Nov 2012
    From
    Hyrule
    Posts
    39
    Thanks
    10

    Re: If x>2

    well notice that x-4=(x-2)(x+2), from here come the idea that 2 or -2 is a zero of x-x-6. In fact -2 is a zero, so x-x-6=(x+2).Q(x), and Q(x) is some polynomial, after computation q(x)=x-3.
    So the answer is (x-3)/(x-2)
    Follow Math Help Forum on Facebook and Google+

  7. #7
    Forum Admin topsquark's Avatar
    Joined
    Jan 2006
    From
    Wellsville, NY
    Posts
    9,962
    Thanks
    349
    Awards
    1

    Re: If x>2

    @someguy123: Be sure you understand why we have to have x > 2. (Actually x can be anything but 2, but let's stick to the original.)

    -Dan
    Follow Math Help Forum on Facebook and Google+

Search Tags


/mathhelpforum @mathhelpforum