已知（4x+y-1)²+|2y-2x+1|=0,求x,y的值

已知x²+y²-4x+6y+13=0,求x²+2y/x²-3y²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5x²+4x-2xy+y²+1=0,求x,y的值 已知x²+4x+y²-10y+29=0 求【x+2y】÷【x²-2y²】的值 已知：x²+4x+y²-+6y+13=0,求x-2y/x²+y²的值. 已知2x-y=10,求[(x²+y²)-(x-y)²+2y(x-y)]/4y 已知实数x,y,满足x²+y²-2x+4y+5=0,试求x,y的值 已知x（x+1）(x+2)(x+ 已知2x-y=10,求[(x²+y²)-(x-y)²+2y(x-y)]÷4y的值 1.已知x/x-1=（y²+4y-1）/（y²+4y-2）,则y²+4y-x的值为多少? 已知实数x,y满足方程(x²+2x+3)(3y²+2y+1)=4/3,求x+y的值 已知|2x+y-1|+(3x-2y-5)²=0,求x与y的值 已知：x+y=2,2y²-y-4=0,求y-x/y的值