xy满足(x-5)的绝对值=8x-y²-16
xy满足(x-5)的绝对值=8x-y²-16
已知x,y满足y=(根号x²-16+根号16-x²)-9分枝8-2x,求xy的平方根.
已知xy=8满足x²y-xy²-x+y=56,求x²+y²
.已知xy=8满足x²y-xy²-x+y=56,求x²+y²的值 2.若x-3=
1.已知(x+2²)+(y+1的绝对值)=0,求5xy的平方-{2xy²-[3xy²-(4
1、已知xy满足(x+1)²+1y+21=0试求-2xy·5x²y+(0.5x²y&sup
实数x、y,满足4x²+4y²-5xy=5.设s=x²+y²,求s的最小值的倒数
已知实数x,y满足x-8的绝对值 (y-5)的平方=0,求4xy-(x y)-3的平方根
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x,y满足x²+y²+5/4=2x+y,求代数式(x+y)·xy的值.
已知x,y满足x²-4xy+4y²-5(x-2y)=3,求2x-4y值
已知x,y满足2x²-2xy+y²+2x+1=0,求(xy)2006次方的值