已知实数x、y满足2x2-7xy+3y2=0,求x:y
已知实数x、y满足2x2-7xy+3y2=0,求x:y
已知非零实数x,y满足:x2+xy-2y2=0,求(x2+3y+y2)/(x2+y2)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x2+xy+y2=3,则x2-xy+y2的最小值
已知实数x,y 满足x2+y2+2x-2√3y=0求:
已知实数x,y满足x2+2xy+3y2-8y+6=0,求x,y的取值范围
已知实数x、y满足x2 4xy 4y2 x 2y-6=0,求6/x 2y的值
已知实数x,y满足方程组{x+xy+y=2+3倍根号2 {x2+y2=6 求(x+y+1)的绝对值
已知实数x,y满足方程组x+xy+y=2+3根号2和x2+y2=6.求|x+y+1|的值.
已知实数x,y满足x2+y2-xy+x-1/2y+1/4=0 试求x,y的值
已知X,Y为实数,且满足(X+√(X2+2008))(Y+√(Y2+2008))=2008,求X2-3XY-4Y2-6X