{(x-y)²+(x+y)(x-y)}÷2x
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{(x-y)²+(x+y)(x-y)}÷2x
{(x-y)²+(x+y)(x-y)}÷2x
=(x-y)(x-y+x+y)÷2x
=(x-y)(2x)÷2x
=x-y
=(x-y)(x-y+x+y)÷2x
=(x-y)(2x)÷2x
=x-y
{(x-y)²+(x+y)(x-y)}÷2x
2.(x+y)²(x-y)²-(x-y)(x+y)(x²+y²)
求因式分解(x-y)²-2(x-y)³和(x+y)(x-y)-x(x-y)
x(x-y)-y(y-x)+(x-y)²因式分解
(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?
-{-[-(x-y)]}+{-[(x+Y)]}
(x-y/x+2y)³
已知x-y=1,y≠0,求{(x+2y)²+(2x+y)(x+4y)-3(x+y)(x-y)}÷y的值.
计算4(x+y)^5(x-y)^4÷[2(x+y)³*(y-x)²]
因式分解x²(x-2y)+y²(2y-x)
【(2x+y)²-y(y+4x)-8x】÷2x,其中x=100