Odpowiedzi

2009-09-12T20:31:56+02:00
|4-√7|-|1-3√7|
4-√7>0 czyli |4-√7|=4-√7
1-3√7<0 czyli |1-3√7| =-1+3√7
|4-√7|-|1-3√7|= 4-√7 -(-1+3√7)=5-4√7
2009-09-12T20:49:32+02:00
|4-√7|-|1-3√7| =
4-√7-(-1+3√7)=
4-√7+1-3√7=
5-4√7