若x,y满足y<x-2+2-x+4,化简|y-4|-y2-10y+25.
若实数x,y满足X2+y2-2X+4y=0,则x-2y的最大值为?
x/x-y*y^2/x+y-x^3y2/x^4-y^4/x^2/x^2+y^2
已知实数x、y满足x2+4y2=2x+4y-2,求x-2y的平方根.
实数x .y满足x2+y2 - 4x+2y - 4=0.则2x-y的最大值是?
如果实数x,y满足等式x2+y2=2x+4y,求2x-y的最小值
已知实数x,y满足x2+y2+2x-4y+5=0
若实数x,y满足x2+y2-2x+4y=0,则x-2y的最大值为______.
若实数x、y满足x2+y2-2x+4y=0,则x-3y的最大值是______.
y满足x-y+2≥0,x+y-4≥0,2x-y-5≤0 求X^2+Y^2-10Y+25的最小值
正整数x,y满足x2-y2=2xy,求x-y/x+y的值
整数x,y满足x2-y2=2xy,求x-y/x+y的值
化简求值:(2x+y)(x-2y)-2x(x+y),其中x、y满足x2+y2-2x+4y=-5.