已知实数x y满足x+y=7,xy=5,求x-y的值
已知实数x,y,xy=5,x+y=7,求代数式x²y+xy²的值
已知实数X、Y满足X的平方+XY-Y的平方=0,求X除以Y的值
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(x2)+(y2)-xy+2x-y+1=0,求x,y的值
已知实数x、y满足X2+y2-xy+2x-y+1=0,试求x、y的值
已知实数X.y满足X^2+xy-y^2=0,求x/y的值
已知实数x y满足x×x+y×y-xy+2x-y+1=0 试求x y的值
已知实数x,y满足关系式| x+y-7 |+√(xy-6)=6,求(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
已知实数x、y满足5x²-3xy+1/2y²-2x+1/2y+1/4=0 求x、y的值
已知实数x,y满足5x^2-3xy+1\2y^2-2x+1\2y+1\4=0,求x,y的值
已知实数x y满足x平方y+xy平方=20,xy+x+y=9,试求x^+y^的值.