Respostas

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2014-06-09T23:08:15-03:00
X(y-1) - 1(y-1)

(y-1) . (x-1)
2 5 2
2014-06-09T23:25:26-03:00
Xy-x-y+1
x(y-1) -1(y-1)
(x-1).(y-1)
1 2 1