已知实数x.y满足ㄧ2x-y+1ㄧ+2(3x-2y+4)^2=0,求代数式1-x-y/x-2y除x^2-y^2/x^2-4xy+4y^2 希望你门看的清楚

已知实数X,Y满足2 已知实数xy满足x+2y 已知实数xy满足 x+y-2 已知实数x.y满足(x+2)^2+y^2( 已知实数x,y满足y=|x-1|,则x+2y的最大值是 已知实数x,y满足y=|x-1|若x+2y 已知实数x,y满足x-ay-1>=0,2x+y>=0,x 已知实数x,y满足(x+y)^2=1,(x-y)^2=25,求x,y的值 已知实数x,y满足x²+y²-xy+2x-y+1=0 求x y 已知实数x,y满足x-y 已知实数X,Y满足{|x+y| 已知实数x,y满足y=x^2-2x+2(-1 已知正实数x,y满足x+2y=2.则y/2x+1/y的最小值是 已知实数x,y满足根号(x-1)+y^2=4y-4,求(x-y)^2012的值 已知实数x、y满足-1 已知实数x,y满足：1 已知实数x,y满足 2x+y-2>=0,x-2y+k>=0,x-1 已知实数x,y满足不等式组：2x-y=0,x+2y