｛x+5y-6=0,3x-6y-4=0快·······!两分钟,就两分钟快啊哥儿们.

大括号x+y/2+x-y/3=6,4(x+y)-5(x-y)=2 快 大括号x+y/2+x-y/3=11/6 4(x+y)-5(x-y)=7 快 已知4x2+9y-4x-6y+2=0 求根号y/根号x+根号y - 根号y/根号x-根号y快. {x+y=1 ,xy=-6{x(2x-3)=0,y=x²-1{(3x+4y-3)(3x+4y+3)=0,3x+2y=5{(x-y+2)(x+y)=0,x²+y²=8{(x+y)((x+y-1)=0,(x-y)(x-y-1)=0 方程组 x-3y=2,-2x+6y=5如何解快 快 x-6的绝对值+Y+5的绝对值=0,则X-Y= 快 （x+y-5)*（x+y-5)+（x-y+3)=0 x*x-y*y 已知:3x-5y=0,求x/y,x-y/y,x-y/x 已知x.x+y.y-6x-8y+25=0,求3x.x+5y的值 (x-y)的4次方/(y-x)的3次方+(x-y)0的次方*(y-x)+(-x-y)7次方/(x+y)6次方= （5x-6y)(x+y)=0(x不等于y),则y/x= 已知x,y满足2x-y=3m,x+2y=4m+5,且x+y=0,求m的值快 若2x-3y+4=0则x（x*x-1)+x(5-x*x)-6y+7 y-3x=2,y-5x=4,y-7x=6,y-9x=8,y-11x=0方程组,无 已知x^3+xy^2+x+x^2y+y^3+y=0,求5x-6y/3x+4y的值. X²-4X+Y²+6Y+13=0 X=?Y=?X²-4X+Y²+6Y+13=0 X=?Y=?快 [(x+2y)²-（x+y)(3x-y)-5y²]÷(2x),其中x,y满足x²+4x+y²-y+17/4=0已知、x+y=6且xy=4(1)x²+y² (2)（x-y）² (3)x{四次方}+y{四次方}第一题没错 书上就这样写的！ 已知X,Y,满足(X+3Y)(X-3Y)=-10(Y^2-6/5)和2X(Y-1)+4(1/2X-1)=0 （X+Y)^2 X^2Y+XY^2注：*/* 是分数