实数X,Y满足(2X-3Y)^2+X^2+6X+9=0,则Y=?(X-Y)^2009=?
若实数x,y满足{2x-y>=0,
设实数X,Y满足2X+Y-2>=0,X-2Y+4>=0,3X-Y
已知实数x, y满足x²+y²-2x+6y+10=0,求y∧-x.
已知实数x满足x^2+2xy+y^2-(x+y)-6=0则x+y的值
若实数x,y满足x+2y-2=0,则3Λx(x次方)+9Λy(y次方)的最小值为...
若实数x,y满足x的平方+y的平方-4x-2y+5=0,则(x+y)/2x-3=
已知实数x,y满足x=√(9-x+2y)+√(3x-6y-27)+5,则-2x-y的立方根为
实数X.Y满足X*X+Y*Y-2X-2Y+1=0,则(Y-4)/(X-2)的取值范围是?
若实数X,Y满足X²+Y²+4X-2Y +1=0,则X²-6X+Y²-2Y的最大
若实数x,y满足不等式组x>=0 ,y>=0,x+2y
已知实数x,y满足不等式组:2x-y=0,x+2y
已知正实数x,y满足x+2y=4,则1x+1y