已知x2+2xy+y2-10y+26＝0 ,求x+2y的平方根,2y+2x的立方根

已知X2-2x+y2+6y+10=0,求（x2-2xy）/(xy+y2)的值 已知xy满足x2+y2-6x+2y+10=0,求立方根号x2-y2的值 已知x2+y2+4x-2y+5=0,求x2+2xy+y2值 已知x2+y2-10x-6y+34=0,求（x-y/x+y）2÷x2-y2/xy×x2+2xy+y2/x2-xy 的值. 已知x2+2xy+y2-10y+26＝0 ,求x+2y的平方根,2y+2x的立方根 若X2+Y2-2X-6Y+10=0 ,求（x2-y2)/xy的值 已知x2+4y2+x2y2+1=6xy,则(x4-y4)/(2x2+xy-y2)*(2x-y)/(xy-y2)/(x2+y2/y)2= 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 已知非零实数x,y满足:x2+xy-2y2=0,求(x2+3y+y2)/(x2+y2)的值 已知x2+4y2+x2y2-6xy+1=0,求 x4-y4/2x-y 乘 2xy-y2/xy-y2 除以（x2+y2/xy）2乘1/x+y的值 已知x2＋xy－2y2=0（y≠0）,那么x／y＝ 已知5x2+2y2+2xy-14x-10y+17=0,则x=,y= 已知x2-2xy-3y2=0求(2x+3y)/2y 已知x2+2xy-2x+y2-2y+1=0,则x+y等于 已知实数x、y满足2x2-7xy+3y2=0,求x：y 已知x/y+y/x=2,求(x2+xy+y2)/(x2-4xy+y2)的值 已知x2+y2+2x－6y+10=0,求xy的值已知x+y+z=1,且xy+yz+xz=0,求x2+y2+z2的值 已知x2+4y2-2x+4y+2=0 求xy