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Cho các số x,y thõa mãn điều kiện $x^{2}$ - 2xy + 6$y^{2}$ -12x + 2y + 41=0. Tính giá trị của biểu thức A= $\frac{2020-2019(9-x-y)^{2019} - (x-6y)^{2018} }{y1010}$
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