已知正数x,y满足x2-y2=2xy,求x−yx+y
已知2x2-xy-3y2=0,求x−yx+y
1.已知正数x,y满足x2-y2=2xy,求(x-y)/(x+y)的值
正数xy满足x2-y2=2xy,求x+y分之x-y的值
已知x2+y2-6x-8y+25=0,求代数式yx−xy
已知3x2+xy-2y2=0,求(x+yx-y+4xyy
已知x2+y2-2x-4y+5=0,分式yx−xy
已知实数x,y满足方程x2+y2-4x+1=0,求yx
已知实数x、y满足2x2-7xy+3y2=0,求x:y
已知实数x,y满足x2+y2+4x-6y+13=0,求yx的值.
已知点P(x,y)满足椭圆方程2x2+y2=1,则yx−1
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