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Calculators Complex Numbers on the TI-89 Titanium Claculator, help?

  1. Mar 25, 2008 #1
    Hello all,

    My first post here and sorry it is not very scholarly. lol

    I am currently taking Algebra 2 and am completely lost as how to find the answers to simple equations and expressions such as the ones below. Can anybody help me out or if you own a TI-89 Calc and know how to perform these operations, please let me know! I will need to do it by hand but if I can do it on the Calc I can learn better with having the answer before hand and such. Well anyway, here are the examples.

    1. (4 - i) + (3 + 2i) change to standard form

    2. 5i(-2 + i)

    Thanks everybody!^^
  2. jcsd
  3. Mar 25, 2008 #2


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    Learn how to do it by hand FIRST. Doing it on the calculator will not help in your learning process, despite what you would like to believe.
  4. Mar 25, 2008 #3
    For the TI-89, you use 2nd Catalog, which has the i written above it.
  5. Jul 2, 2010 #4
    I wrote a little blog post that explains exactly what you are looking for.

    http://blog.ncday.net/2010/07/how-to-manipulate-complex-numbers.html" [Broken]

    I hope this helps!
    Last edited by a moderator: May 4, 2017
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