1. Not finding help here? Sign up for a free 30min 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!

Simplifying complex square

  1. Apr 7, 2012 #1
    1. The problem statement, all variables and given/known data

    Simplify ([itex]\sqrt{3+4i}[/itex]+[itex]\sqrt{3-4i}[/itex])[itex]^{2}[/itex]



    2. Relevant equations



    3. The attempt at a solution

    well I tried expanding it out but I dont think that is the right approach but I have no other idea to tackle the problem?

    so by expanding I had 6+2([itex]\sqrt{3+4i}[/itex])([itex]\sqrt{3-4i}[/itex])

    But then I didnt know where to go

    please help!!
     
  2. jcsd
  3. Apr 7, 2012 #2
    [tex](\sqrt{3+4i})(\sqrt{3-4i})=\sqrt{(3+4i)(3-4i)}[/tex]

    Now how can you simplify the term in the sqrt? Notice we have a complex number multiplied by it's complex conjugate
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook




Similar Discussions: Simplifying complex square
Loading...