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x+y=17
xy=6
x=6/y
6/y+y=17
6/y+y2/y=17
(6+y2)/y=17
y2-17y+6=0
Using quadratic equation:
y = (17 +- sqrt(265))/2
x = 17-y
-3 and -14
13
-151
(20) and (negative 3)
-291
-67
-17
47
17
Its prime factors: 2*2*17 = 68