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XY=-306
Y=1-X
X(1-X)=-306
X-X^2 +306=0
X^2 -X-306=0
(X-18)(X+17)=0
X=18 o X=-17 NO IMPORTA CUAL SE ESCOJA
18+Y=1
Y=-17
Los números son 18 y -17
-17+18=1
-17x18=- 306