Odpowiedzi

2010-03-01T18:08:22+01:00
P: 4x-2xy-1
D: -5x+xy+1
P-D
(4x-2xy-1)-(-5x+xy+1) = 4x-2xy-1+5x-xy-1= 9x-3xy-2
22 4 22
2010-03-01T18:08:41+01:00
4x-2xy-1-(-5x+xy+1) = 4x-2xy-1+5x-xy-1= 9x-3xy-2
11 4 11