已知|2x+3y+5|+(5x-3y+2)^2=0,求x,y的植
已知x-y/x+y=3,求代数式5(x-y)/x+y-x+y/2(x-y)
已知3x-2y/x+y=5/3求x;y的值
已知x-3y=0(y≠0)求2x+5y/3x-2y的值
已知x^3+xy^2+x+x^2y+y^3+y=0,求5x-6y/3x+4y的值.
已知x,y>0 2x+y+3=xy 求5x+4y最小值
已知|2x+3y+5|+(5x-3y+2)^2=0,求x,y的植
已知x=1/3,y=-1/2,求代数式x-(x+y)+(x+2y)-(x+3y)+(x+4y)-(x+5y)+...-(
1.已知:x-2y=3,求[(3x+2y)(3x-2y)-(x+2y)(5x-2y)]除4x 的值
已知x-2y=2016,求[(3x+2y)(3x-2y)-(x+2y)(5x-2y)]除以8x的值
已知x-2y=2012,求[(3x+2y)(3x-2y)-(x+2y)(5x-2y)]÷8x的值
已知x-2y=2011,求[(3x+2y)(3x-2y)-(x+2y)(5x-2y)]÷4x的值.
已知X/Y=5/3,求X/(X+Y)+X/(X-Y)-Y*2/(X*2-Y*2)的值.