若|2x+4|+|6-2y|=0,求x2-y的值.
若x2-2x+y2+6y+10=0,求x,y的值
已知:x2+2x+y2-6y+10=0,求x,y的值.
已知x2+y2+2x-6y+10=0,求x+y的值.
已知x2+4x+y2-2y+5=0,求x,y的值.
若X2+Y2-2X-6Y+10=0 ,求(x2-y2)/xy的值
已知x2-2x+y2+6y+10=0,求多项式(2x+y)(2x-y)+(x+y)2-2(2x2-xy)的值
已知X2+Y2+8X+6Y+25=0 求代数式X2++XY+4Y2分之X2-4Y2 减X+2Y分之X的值
若实数x,y满足(x+2y-2)(3x+2y+2)+2(x2+4)=0,求x+y的值.
已知x2-2x+y2+6y+10=0,求(2x-y)的值
若x2-2xy-y2-x+Y-1=0 求x-y的值
已知:x2+y2-10x-2y+26=0,求x、y的值.
已知[(x2+y2)-(x-y)2+2y(x-y)]÷4y=1,求4x/4x2-4y2-1/2x+y的值,