Results 1 to 5 of 5

Math Help - look for the value that satisfies the equation

  1. #1
    Newbie
    Joined
    Mar 2013
    From
    Philippines
    Posts
    5

    Question look for the value that satisfies the equation

    please explain how can I answer this one I know the answer should be a.) -4 & b.) -1.
    could you explain how will I come up with that answer? Thank you

    look for the value that satisfies the equation-math.jpg
    Follow Math Help Forum on Facebook and Google+

  2. #2
    Member Ruun's Avatar
    Joined
    Mar 2009
    From
    North of Spain
    Posts
    129
    Thanks
    13

    Re: look for the value that satisfies the equation

    Hint x^3+x^2+ax+1=(x-x_1)(x^2+2x-2) or \frac{x^3+x^2+ax+1}{x^2+2x-2}=(x-x_1)
    Follow Math Help Forum on Facebook and Google+

  3. #3
    MHF Contributor

    Joined
    Apr 2005
    Posts
    15,405
    Thanks
    1328

    Re: look for the value that satisfies the equation

    That's very clever! I would have just solved x^2+ 2x- 2 to see that the only x that satisfy that equation are -1+\sqrt{3} and -1- \sqrt{3}, then put those into P to see how I could cancel that irrational " \sqrt{3}" part. But Ruun's hint is much simpler.
    Last edited by HallsofIvy; March 29th 2013 at 06:29 AM.
    Follow Math Help Forum on Facebook and Google+

  4. #4
    Newbie
    Joined
    Mar 2013
    From
    tokyo
    Posts
    10

    Re: look for the value that satisfies the equation

    I'm trying to solve it to but I don't get the equation. should I substitute the given?
    Follow Math Help Forum on Facebook and Google+

  5. #5
    MHF Contributor

    Joined
    Apr 2005
    Posts
    15,405
    Thanks
    1328

    Re: look for the value that satisfies the equation

    You have been told two different ways to solve this problem. Please show what you have tried and where you are stuck.
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. [SOLVED] Solve for x that Satisfies the Trigonometric Equation
    Posted in the Trigonometry Forum
    Replies: 6
    Last Post: November 10th 2011, 07:13 PM
  2. Show that y(x) satisfies equation
    Posted in the Differential Equations Forum
    Replies: 5
    Last Post: August 27th 2011, 10:34 AM
  3. Show Function Satisfies Equation
    Posted in the Algebra Forum
    Replies: 6
    Last Post: November 25th 2010, 10:43 AM
  4. Help me ! A function satisfies the differential equation
    Posted in the Differential Equations Forum
    Replies: 1
    Last Post: February 11th 2009, 10:28 AM
  5. Replies: 2
    Last Post: December 9th 2008, 09:25 AM

Search Tags


/mathhelpforum @mathhelpforum