2x+3y=3 3x+2y=11的解是

若x-y不等于0,2x-3y=0,则分式(10x-11y)/(x-y)的值是（）?(10x-11y)/(x-y) =[(8x-8y)+(2x-3y)]/(x-y) =8为什么8X-8Y=8？(10x-11y)/(x-y)=[(8x-8y)+(2x-3y)]/(x-y)=8+(2x-3y)]/(x-y)=8+0=8 已知x-y=3,求[（x+y)(x-y)-(x-y)^2+2y(x-y)]除以的值 (x+y)(x+2y)(x+3y)(x+4y)=-40y的值为根号11 若2/x-1/y=3,求[y/x-y/x-y(x-y/x-x+y)]/x-2y/x的值 (2x+y)的方-2(2x-y)(x-y)+(x-y)的方的值,其中想x,y是二元一次方程组2x-3y=13,3x+2y=0的解, (2x+y)^2-2(2x+y)(x-y)+(x-y)^2的值,其中x,y是二元一次方程组2x-3y=13 3x+2y=0的解. 试求代数式(2x+y)^2-2(2x+y)(x-y)+(x-y)^2的值,其中x,y是二元一次方程组2x-3y=13,3x+2y=0的解 试求代数式（2X+Y)²-2(2X+Y)(X-Y)+(X-Y)²的值,其中X,Y是二元一次方程组｛2X-3Y=13的解.｛3X+2Y=0 y=3(x-y),x=2(x-y)求x,y的值 已知x-2y/3y-x=2/3,则y/x的值是 x-y/x+y=-1/2,x*x-xy-2y*y/x*x-3xy+2y*y的解是多少?同上,请将过程写出, 3(x+y)-2(x-y)=11 4(x+y)+3(x-y)=9 4(x-y)-3(x-y)=9 5(x-y)+2(x-y)=11 3(x+y)-4(x-y)=11,2(x-y)+5(x+y)=27 当x=1,y=-2时,代数式x-(x+y)+(x+2y)-(x+3y)+…-(x+99y)的值是 当X=1,Y=-2时,代数式X-(X+Y)+(X+2Y)-(X+3Y)+…-(X+99Y)的值是 把6x（x－y）的平方＋3（y－x）的立方分解因式我知道答案是6x(x-y)^2+3(y-x)^3=6x(x-y)^2-3(x-y)^3=3(x-y)^2[2x-(x-y)]=3(x-y)^2(x+y)可为什么=6x(x-y)^2-3(x-y)^3=3(x-y)^2[2x-(x-y)] 2x+3y=3 3x+2y=11的解是