方程组1.{x+y+1=0,x^2+4y^2=8 2.{(x-3)^2+y^2=9,x+2y=0 3.{x+y=6,xy=7方程组1.{x+y+1=0,x^2+4y^2=8 2.{(x-3)^2+y^2=9,x+2y=03.{x+y=6,xy=7方程组1.{x+y+1=0,x^2+4y^2=8 2.{(x-3)^2+y^2=9,x+2y=0 3.{x+y=6,xy=7
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方程组1.{x+y+1=0,x^2+4y^2=82.{(x-3)^2+y^2=9,x+2y=03.{x+y=6,xy=7方程组1.{x+y+1=0,x^2+4y^2=82.{(x-3)^2+y^2=9
方程组1.{x+y+1=0,x^2+4y^2=8 2.{(x-3)^2+y^2=9,x+2y=0 3.{x+y=6,xy=7方程组1.{x+y+1=0,x^2+4y^2=8 2.{(x-3)^2+y^2=9,x+2y=03.{x+y=6,xy=7方程组1.{x+y+1=0,x^2+4y^2=8 2.{(x-3)^2+y^2=9,x+2y=0 3.{x+y=6,xy=7
方程组1.{x+y+1=0,x^2+4y^2=8 2.{(x-3)^2+y^2=9,x+2y=0 3.{x+y=6,xy=7
方程组1.{x+y+1=0,x^2+4y^2=8 2.{(x-3)^2+y^2=9,x+2y=03.{x+y=6,xy=7
方程组1.{x+y+1=0,x^2+4y^2=8 2.{(x-3)^2+y^2=9,x+2y=0 3.{x+y=6,xy=7
方程组1.{x+y+1=0,x^2+4y^2=8 2.{(x-3)^2+y^2=9,x+2y=0 3.{x+y=6,xy=7方程组1.{x+y+1=0,x^2+4y^2=8 2.{(x-3)^2+y^2=9,x+2y=03.{x+y=6,xy=7方程组1.{x+y+1=0,x^2+4y^2=8 2.{(x-3)^2+y^2=9,x+2y=0 3.{x+y=6,xy=7
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