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xy=-24

x+y=15

if y is not 0 x=24/y and y+24/y=15

y2+24=15y => y2-15y+24=0, delta = (-15)2 - 4 x 1 x 24 = 129

y = (-(-15)±sqrt(129)/(2 x 1) = (15±sqrt(129))/2

and then x = 24/y = 48/(15±sqrt(129)

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12y ago

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