如果实数x,y满足2x^2-6xy+9y^2-4x+4=0,那么根号y=
如果实数x,y满足2x^2-6xy+9y^2-4x+4=0,那么根号y=
如果实数x,y满足2x的平方-6xy+9y的平方-4x+4=0
已知实数X,Y满足2X方-4XY+4Y方-6X+9=0则X倍根号下8Y=
若实数x,y满足2x²-6xy+9y²-4x+4=0,求根号y的值.
已知正实数x y满足x-根号xy-2y=0求 x+3根号xy+2y/2x-2根号下xy-y
已知实数x,y,z,满足那么x+y=6,z^2=xy-9,求(x+y)^z
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满足根号(x+y-8)+根号(8-x-y)=根号(3x-y-4)+根号(x-2y+7),求x,y
实数XY满足X*X+Y*Y+2X-4Y+1=0,求Y/(X-4)的最大值和最小值及根号下X*X+Y*Y+2X+1的最大值
若x.y都是实数,且满足y=根号x-4 + 根号4-x + 1 ,求3(-xy+2x)-2(3x-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