Odpowiedzi

2009-10-24T19:07:50+02:00
[7] - 1 + 3 - [7] = -1 + 3 = 2
[..] - pierwiastek
2009-10-24T19:13:04+02:00
|√7-1|-|-3+√7|=
=√7-1-(3-√7)=√7-1-3+√7=2√7-4