已知实数x、y满足x²+xy-y²=0,求x/y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 已知非零实数x,y满足x²-4xy+4y²=0,求分式2x-y除以2x+y的值 已知实数满足x²+4y²=4x,求x²+y²的最值 已知实数x,y满足x²+4y²=4.求f(x,y)=x²+2xy+4y²+x+2 .已知xy=8满足x²y-xy²-x+y=56,求x²+y²的值 2.若x-3= 已知x/y=3,求x²+2xy-3y²/x²-xy+y²的值 已知xy=8满足x²y-xy²-x+y=56,求x²+y² 已知X²-5XY+6Y²=0,求(X²+3XY)\2Y²的值 已知实数xy满足方程(x-3)²+(y-3)²=6,求x+y的最大值和最小值 已知,整数x、y满足x²+xy+2y²=7,求x、y的值. 已知实数X,Y,Z满足 X²-6XY+10Y²+4Y+∣Z²-3Z+2∣+4=0,求（X+ 已知非零有理数x,y满足x²-4xy+4y²=0,求（x-y)/（x+y)的值