Respostas

2014-05-24T15:48:18-03:00
Xy + x -2y-2
x(y+1) - 2 (y +1)

(y+1)(x-2)


2 5 2
2014-05-24T15:49:13-03:00
xy+x-2y-2 => x(y+1) -2(y+1) => (y+1)(x-2)
3 4 3