解两道数学题,写出详细步骤 (1)(x-y)²-4(x+y)² (2)x³+x²
解两道数学题,写出详细步骤 (1)(x-y)²-4(x+y)² (2)x³+x²
函数求导,y=arcsin(1-2x),详细步骤 :y'=1/√[1-(1-2x)²]
1/2x·y·x·x-y·x·x²+x·x·y(求详细过程)急!
一道数学题:(2x-y)(2x+y)+(2x+y)²
求因式分解(x-y)²-2(x-y)³和(x+y)(x-y)-x(x-y)
(1/x-y+1/x+y)÷2x/x²+2xy+y².其中x=-2.化解求值.求步骤!急!
(x-2y)²+(2x-4y)(x+y)+(x+y)²
(x-y)的四次方(x-y)-2(x-y)²(y-x)³等于?
若|x+2y-1|+y²+4y+4=0,求(2x-y)²-2(2x-y)(x+2y)+(x+2y)&
1、(x-1分之x²)-x-1(因式分解);2、x²(x-y)²-4(y-x)²
(3x-y)²-2x(4x-5y)-(x+2y)²
2.(x+y)²(x-y)²-(x-y)(x+y)(x²+y²)