Odpowiedzi

2010-04-14T18:03:43+02:00
A)-3a+5b-4
b)2-5y+6
c)0,5xy+2ab-af
2010-04-14T18:06:30+02:00
To-(3a-5b+4)=-3a+5b-4
to-(-2+5y-6)=2-5y+6
to-(-0,5xy-2ab+af)=0,5xy+2ab-af