Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Homework Help: Another solve for x I GOT IT THIS TIME just check

  1. Dec 8, 2004 #1
    Another solve for x I GOT IT THIS TIME just check plz

    can someone please check my answer? The question was (3x)/(x^2-1)=[(x)/(x+1)]-4


    my answer x=2/3 , x=-2
    o:)
     
  2. jcsd
  3. Dec 9, 2004 #2
    Both your solutions seem to be perfectly right. :cool:
     
  4. Dec 9, 2004 #3
    OH I NEEDED TO STATE THE RESTRICTIONS for this question if there were any but I dont know what step to get the restrictions from, anyone have any ideas? :smile:
     
  5. Dec 9, 2004 #4
    The restriction would be any value of x that you can put into the original equation to make the solution undefined. For example, if you have an equation:
    1/x = 6,

    x cannot equal zero or the operation is undefined. What would that make the restrictions in your case?
     
  6. Dec 11, 2004 #5
    are the restrictions x cannot = 1 or -1? or are there more?
     
  7. Dec 11, 2004 #6
    Yes, 1 and -1, thats what I see :smile:
     
  8. Dec 11, 2004 #7
    :smile: Thanks
     
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook