Odpowiedzi

2010-02-16T20:02:04+01:00
(5x+4xy+5y)-(2x-xy-3y)+(-x+2xy-y)= 2x+5xy-y

-(2a+3ab)-(2b-ab)+(5a-2ab)-(5b+4ab)= 3a+4ab-7b
2010-02-16T20:03:13+01:00
5x+4xy+5y-2x+xy+3y-x-2xy-y
2x+3xy+7y


-2a-3ab-2b+ab+5a-2ab-5b-4ab
3a-9ab-7b
2010-02-16T20:15:38+01:00
(5x+4xy+5y)-(2x-xy-3y)+(-x+2xy-y)= 2x+5xy-y

-(2a+3ab)-(2b-ab)+(5a-2ab)-(5b+4ab)= 3a+4ab-7b