1. Limited time only! Sign up for a free 30min personal 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!

Homework Help: Solve equation

  1. Mar 26, 2008 #1
    http://img340.imageshack.us/img340/1967/25616732jw6.jpg [Broken]

    i got answer of 0.4
    by trial and error, but i have seem to forgotten the basic of fraction....

    please guide me thanks
    Last edited by a moderator: May 3, 2017
  2. jcsd
  3. Mar 26, 2008 #2
    Dividing by something is the same as multiplying by that something's reciprocal.
  4. Mar 26, 2008 #3
    i have tried that but still the power is larger than a quadratic, so i wasnt able to solve it
  5. Mar 26, 2008 #4
    Reduce the [tex]4-2x[/tex] terms and also with the left over [tex]4-2x[/tex] you can factor out a common term of 2.

    Factor our a common term of 3 in [tex]3-3x[/tex] and keep going from there.
  6. Mar 26, 2008 #5
    Another tip is to square root both sides to get rid of the even powers larger than 2 after you've done all that.
  7. Mar 26, 2008 #6
    did factor out the 3 it becomes 27, i think
    and cancelled some of the 4-2x , as you suggested

    but the main problem for me is still so much x,
    cant really isolate it, because i tried expanding it
    and i get like x^1 , x^2, x^3, X^4...
    and do not know how to solve those
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook