Odpowiedzi

2010-02-25T19:52:17+01:00
(x-3)(x-7)<0
x2-7x-3x-21<0
x2-10x<-21
2010-02-25T19:53:32+01:00
(x-3)(x-7)<0
x2-7x-3x-21<0
x2-10x<-21
1 1 1