Badge
| Scholar | Asked a question and accepted an answer. |
Mihai Bişog earned this badge |
jan 1 '12 at 12:02
How to calculate $z^4 + \frac1{z^4}$ if $z^2 + z + 1 = 0$?
| Scholar | Asked a question and accepted an answer. |
Mihai Bişog earned this badge |