Respuestas

2012-06-19T06:24:05+02:00

x*y=247

x+y=32

x=32-y

(32-y)*y=247

32y-y^2-247=0

y^2-32y+247=0

(y-13)(y-19)=0

y=13 ó  y=19

si y=19 x=13

si Y=13   x=19