Odpowiedzi

2010-02-24T15:50:13+01:00
3x-y+3xy + -2x-y-xy =x-2y+2xy

3x-2y-4xy-2x-3y-xy=x+y-3xy
131 4 131
2010-02-24T15:55:50+01:00
-2x-y-xy + 3x-y+3xy = x-2y+2xy

3x-2y-4xy - 2x-3y-xy = x+y-3xy

73 4 73