Odpowiedzi

2010-04-13T17:34:26+02:00
4 * 2a + 4 * 2b + 4 * (a+b) = 8a+8b+4a+4b=12a + 12 b

- > chyba tak ; )
74 4 74
2010-04-13T17:34:37+02:00
3a cm + 3b cm = 6ab cm
81 4 81
2010-04-13T17:35:59+02:00
4 * (a+b) + 4 * 2b + 4 * 2a = 4a + 4b + 8b + 8a = 12a + 12b
23 4 23