若整数x、y满足等式x²+y²+2xy+7=2x+2y,则x+y=
整数x,y满足方程2xy+x+y=83,则x+y怎么算
整数x,y满足x2-y2=2xy,求x-y/x+y的值
若正数x,y满足x²-y²=2xy,求(x-y)/(x+y)的值
已知A=3x²-xy+y²,B=2x²-3xy-2y²,其中x、y满足等式2(x
已知x,y满足等式x²+2x+x²y²+2=-2xy,那么x二千零十二次方+2011y次方
若正实数x.y满足x+y=xy,则x+2y的最小值
若x,y满足等式|x+2|+(y-3)^2=0,则(5x^2 y+5xy-7x)-(4x^2y+5xy-7x)的值为?
已知,整数x、y满足x²+xy+2y²=7,求x、y的值.
整数x,y满足方程2xy+x+y=83,则x+y等于多少?(两个答案)
已知实数x,y满足x²+y²-xy+2x-y+1=0 求x y
正数x,y满足x²-y²=2xy,求x-y/x+y的值
已知实数x,y满足5x²+2y²+1=6xy+4x-2y,则x²-xy+2000y