设实数x,y满足x^2+y^2+8x+6y+25=0,求(x^2-4y^2)/(x^2+4xy+4y^2)-x/x+2y
设实数x,y满足x^2+y^2+8x+6y+25=0,求(x^2-4y^2)/(x^2+4xy+4y^2)-x/x+2y
设实数X,Y满足2X+Y-2>=0,X-2Y+4>=0,3X-Y
已知实数xy满足x^2+y^2-6x+4y+13=0求x^y的值
分式的加减法:实数x、y满足x^2+y^2+8x+6y+25=0,求x^2-4y^2/x^2+4xy+4y^2-x/x+
已知x*x-4xy+4y*y=0 求[2x(x+y)-y(x+y)]/(4x*x-4xy+y*y)的值?
已知x、y均为实数,且满足xy+x+y=17,x^2y+y^2x=66,求x^4+x^3y+x^2*y^2+y^3x+y
已知实数x.y满足根号(x+y-8)+根号(8-x-y)=根号(3x-y-4)+根号(x-2y+7),求x,y
已知x.x+y.y+8x+6y+25=0,求代数式(x.x-4y.y)/(x.x+4xy+4y.y)-x/(x+2y)的
设实数x,y满足x^2+2xy+4y^2=1,则x+2y最大值
已知实数XY满足x^2+y^2+2x+4y-20=0求 y/x
已知实数x,y满足x²+y²-xy+2x-y+1=0 求x y
实数x'y满足x≥y≥1和2x^2-xy-5x+y+4=0求x'y的值