解方程组：x=y+2,x²-2xy+y^2+2x+2y=12 解方程组：x=y+2,x²-2xy+y^2+2x+2y=12

解方程组：x=y+2,x²-2xy+y^2+2x+2y=12 解方程组：x=y+2,x²-2xy+y^2+2x+2y=12
解方程组：x=y+2,x²-2xy+y^2+2x+2y=12
解方程组：x=y+2,x²-2xy+y^2+2x+2y=12

解方程组：x=y+2,x²-2xy+y^2+2x+2y=12 解方程组：x=y+2,x²-2xy+y^2+2x+2y=12
x²-2xy+y^2+2x+2y=12
(x-y)²+2x+2y=12
因为x=y+2
所以x-y=2
所以4+2x+2y=12
x+y=4
x-y=2
所以x=3,y=1
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