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[TEX]A=2x+2y+2+2x^2y-2xy+5x^3y^2+5x^2y^3-5x^2y^2+2xy^2[/TEX]
Bite rang: [TEX]x+y=1[/TEX] \Rightarrow [TEX]x+y-1=0[/TEX]
Chú ý gõ latex nếu không muốn bị phạt thẻ.
Bite rang: [TEX]x+y=1[/TEX] \Rightarrow [TEX]x+y-1=0[/TEX]
Chú ý gõ latex nếu không muốn bị phạt thẻ.
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