A
ahxd123


giup minh giai he 2pt sau
[TEX]\left{x^3-6(x^2)y+9x(y^2)-4y^3=0 \\ \sqrt[]{x+y}+\sqrt[]{x-y}=0[/TEX]
[TEX]\left{x^3-6(x^2)y+9x(y^2)-4y^3=0 \\ \sqrt[]{x+y}+\sqrt[]{x-y}=0[/TEX]
Chắc thế!
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