Recent content by zcserei

  1. Z

    Is the Key Correct? Simplifying Complex Numbers Using Roots of Unity

    Homework Statement I've been recapitulating some lessons we learned in high school 2 years ago for the exams I need to take this year. There was this exercise I couldn't solve in a nice way. z^2005+(1/z^2005) if we know that z^2+z+1=0 Homework Equations I couldn't came up with a...