-4000÷y 10y=420

已知2x-y=10,求式子[(x^2+y^2)-(x-y)^2+2y(x-y)]/4y(4xy-2y²)/4y是怎么变成=2y(2x-y)÷4y已知2x-y=10,求式子[(x^2+y^2)

(x+y)^2/y^2-xy÷[-y^2+xy/(x-y)^2,x=0,y=根号10(x+y)^2/y^2-xy÷[-y^2+xy/(x-y)^2,x=0,y=根号10(x+y)^2/y^2-xy÷[

(x+y+z)÷10=x+1.1y+x=z-80+y-1z-y=8x+y+8x+z÷y=?(x+y+z)÷10=x+1.1y+x=z-80+y-1z-y=8x+y+8x+z÷y=?(x+y+z)÷10

已知2x-y=10【（x²+y²）-（x-y)²+2y（x-y）】÷4y过程已知2x-y=10【（x²+y²）-（x-y)²+2y（x-y）

2x-y=10【（x²+y²）-（x-y)²+2y（x-y）】÷4y2x-y=10【（x²+y²）-（x-y)²+2y（x-y）】÷4y2x

已知y-2x=10,求[2y(x-y)-(x-y)²+(x+y)²-2xy]÷4y的值已知y-2x=10,求[2y(x-y)-(x-y)²+(x+y)²-2xy

如果2x-y=10,求代数式[(x²+y²)-(x-y)²+2y(x-y)]÷4y的值如果2x-y=10,求代数式[(x²+y²)-(x-y)

如果2X-Y=10,求代数式[(X²+Y²)-(X-Y)²+2Y(X-Y)]÷4Y如果2X-Y=10,求代数式[(X²+Y²)-(X-Y)²

已知2x-y=10,求[(x²+y²)-(x-y)²+2y(x-y)]÷4y的值已知2x-y=10,求[(x²+y²)-(x-y)²+2y(

已知2x-y=10求代数式[(x∧2+y∧2)-(x-y)∧2+2y(x-y)]÷4y的值已知2x-y=10求代数式[(x∧2+y∧2)-(x-y)∧2+2y(x-y)]÷4y的值已知2x-y=10求

已知x²-y²=10,求[（x+y）³-2y(x+y)²-4(x+y)]÷(x+y)的值已知x²-y²=10,求[（x+y）³-2

已知2x-y=10,求代数式[（x²+y²）-（x-y）²+2y（x-y）]÷4y的值?已知2x-y=10,求代数式[（x²+y²）-（x-y）

已知2x-y=10,求代数式[x²+y²-(x-y)²+2y(x-y)]÷4y的值已知2x-y=10,求代数式[x²+y²-(x-y)²+2

已知2x-y=10,求式子[(x^2+y^2)-(x-y)^2+2y(x-y)]÷2y已知2x-y=10,求式子[(x^2+y^2)-(x-y)^2+2y(x-y)]÷2y已知2x-y=10,求式子[

已知x²-y²=10,求[(x+y)的三次方-2y(x+y)²-4(x+y)]÷(x+y)的值已知x²-y²=10,求[(x+y)的三次方-2y(x+

已知x+y=10,求[(x+y)^2-(x-y)^2-2y(x-y)]÷5y的值已知x+y=10,求[(x+y)^2-(x-y)^2-2y(x-y)]÷5y的值已知x+y=10,求[(x+y)^2-(

y"=(y'')^3+y''y"=(y'')^3+y''y"=(y'')^3+y''优化一下,y=arcsin（c1*e^x）+c2

实数x,y满足|2分之5x-y|+y²-10y+25=0,求代数式1-x-2y分之x-y÷x平方-y平方分之x²-4xy+4y实数x,y满足|2分之5x-y|+y²-10

(10X+10Y)÷（X-Y）=40X,Y各等于几,(10X+10Y)÷（X-Y）=40X,Y各等于几,(10X+10Y)÷（X-Y）=40X,Y各等于几,(10X+10Y)÷（X-Y）=40(10X

[(X+Y)平方-(X-Y)平方]÷(2XY),其中X=10Y=5[(X+Y)平方-(X-Y)平方]÷(2XY),其中X=10Y=5[(X+Y)平方-(X-Y)平方]÷(2XY),其中X=10Y=5x