已知实数x、y满足x^2+4xy+4y^2+x+2y-6=0,求6/(x+2y)的值

已知实数xy满足x^2+y^2-6x+4y+13=0求x^y的值 已知实数x、y满足x^2+4xy+4y^2+x+2y-6=0,求6/(x+2y)的值 已知实数x、y满足x^2+4xy+4y^2+x+2y-6=0,求x+2y的平方根是多少? 已知实数x满足x^2+2xy+y^2-(x+y)-6=0则x+y的值 已知实数x,y满足5x^2-3xy+1\2y^2-2x+1\2y+1\4=0,求x,y的值 已知X,Y为实数,且满足2X^2+4XY+4Y^2+8X+12Y+10=0,求x+y的值. 已知实数x、y满足5x²-3xy+1/2y²-2x+1/2y+1/4=0 求x、y的值 已知非零实数x,y满足x²-4xy+4y²=0,求分式2x-y除以2x+y的值 已知实数x,y满足关系式│x+y-3│+根号（xy-6）=0,求代数式（x+2y）/y-x的值 已知实数x、y满足关系式绝对值x+y-7绝对值+根号（xy-6)=0,求代数式（x+2y)/(y-x)的值 已知实数x、y满足x2 4xy 4y2 x 2y-6=0,求6/x 2y的值 已知x*x-4xy+4y*y=0 求[2x(x+y)-y(x+y)]/(4x*x-4xy+y*y)的值?