若/x+y-2/+(2x-3y+6)的平方等于0则x=( )y=( )

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若/x+y-2/+(2x-3y+6)的平方等于0则x=()y=()若/x+y-2/+(2x-3y+6)的平方等于0则x=()y=()若/x+y-2/+(2x-3y+6)的平方等于0则x=()y=()

若/x+y-2/+(2x-3y+6)的平方等于0则x=( )y=( )
若/x+y-2/+(2x-3y+6)的平方等于0则x=( )y=( )

若/x+y-2/+(2x-3y+6)的平方等于0则x=( )y=( )

若x-y分之x+y=3,求式子x+y分之5(x-y)—2(x-y)分之x+y的值 若2/x-1/y=3,求[y/x-y/x-y(x-y/x-x+y)]/x-2y/x的值 2(y-x)的平方-7(x-y)+6(x-y)-3(y-x)的平方 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 若(x-y)/(x+y)=3 则(x+2y)/(6x-7y)等于 (y-x)^4(x-y)^3+2(x-y)^6(y-x) (x+y)/2- x-y/2=6 3(x+y)=4(x-y) 若x、y满足2x+y=6,x-3y=1,求7y(x-3y)²-2(3y-x)³的值 2(y-x)的平方-7(x-y)+6(y-x)-3(x-y)的平方(合并同类项) 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)] 把下列各式分解因式 x(x+y)(x-y)-x(y+x)² 2 已知2x+y=6,x-3y=1,求7y(x-3y)²把下列各式分解因式x(x+y)(x-y)-x(y+x)²7、已知2x+y=6,x-3y=1,求7y(x-3y)²-2(3y-x)³的值 [(x+y)(x-y)-(x-y)的平方+2y(x-y)]除以(4y)请帮我一下写两道计算题[(x+y)(x-y)-(x-y)的平方+2y(x-y)]除以(4y)[(3x+2y)(3x-2y)-(x+2y)(5x-2y)]除以(4x) 若(x+y+1)的平方+|x-y+2|=0,求代数式3(x+y)的平方-7(x-y)-9(x+y)的平方-6(x-y)的值 2(x-y)²-3(x-y)(-y-x) (x+y)(x-y)+(x-y)的平方-(6X的平方Y-2XY的平方)/2Y 已知xy=2,x-y=3,求(x+y)(x-y)-y^2-(6x^2y-2xy^2)/2y的值. 已知xy=2,x-y=3,求(x+y)(x-y)-y^2-(6x^2y-2xy^2)/2y的值. 若x^2+y^2=6,x+y=-3,则(x-y)^2的值为若x^2+y^2=6,x+y=-3,则(x-y)^2的值为