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17 X 19 = 323
x - y = 2
x = 2+y
xy = 323
(2+y)(y) = 323
y² + 2y = 323
y² + 2y - 323 = 0
(y + 19) (y - 17) = 0
y+19 = 0 dan y-17 = 0
y = 19 dan y = 17
Kedua bilangan tersebut adalah 19 dan 17.
Maaf, kalau salah.