M
miko_tinhnghich_dangyeu


[TEX]\left{\begin{x^4+y^2=\frac{697}{81}}\\{x^2+y^2+xy-3x-4y+4=0} [/TEX]
[TEX]\left{\begin{x^4+y^4=2}\\{x^3-2x^2+2x=y^2} [/TEX]
[TEX]\left{\begin{x^3(259-86y)=8}\\{x(8y^3-259)+86=0} [/TEX]
.............
[TEX]\left{\begin{x^4+y^4=2}\\{x^3-2x^2+2x=y^2} [/TEX]
[TEX]\left{\begin{x^3(259-86y)=8}\\{x(8y^3-259)+86=0} [/TEX]
.............
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