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x2y2 - 2014 - (x2 - 2xy + y2 - 2014) = - (x2 + 2xy + y2 - 2014)
x2y2 - 2014 - x2 + 2xy + y2 + 2014 = -x2 - 2xy + y2 + 2014
x2y2 - 2014 + 2xy = -2xy
x2y2 + 2xy -2014 = 0
setelah itu faktorkan seperti biasax, maaf tdk bisa bantu faktorkan krn angkax terlalu besar