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

I Equation with surds

  1. Apr 18, 2017 #1


    User Avatar

    This is not a homework question but I saw this equation on an advert for a website.

    (x+15)1/2 + x1/2 = 15

    I tried squaring both sides of the equation but that didn't help. Can this equation be solved exactly or can it only be solved by iteration ?
  2. jcsd
  3. Apr 18, 2017 #2


    User Avatar
    2016 Award

    Staff: Mentor

    Try isolating one square root (##\sqrt {...} = ...##) before squaring, afterwards it should be clear how to solve for x.
  4. Apr 18, 2017 #3


    User Avatar

    Thanks for your help. Got the answer now
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?
Draft saved Draft deleted

Similar Discussions: Equation with surds
  1. Surd Problem (Replies: 4)

  2. Added surds (Replies: 7)

  3. Laplacing the surd (Replies: 2)