因式分解 x²(x+y)²-x²y²=__
因式分解:x²(x-y)+(y-x)
(x+y)²+x+y-6因式分解
(x-y)²-(x-y)因式分解
因式分解 a²(y-x)+(x-y)
因式分解 x²(x+y)²-x²y²=__
因式分解:(x+2y)²-y²
因式分解(x+y)²(x-y)-(x+y)(x²+y²)
因式分解:(x-y)(3x-7y)²-4(x-y)(x+y)²
因式分解 -5x³y(x-y)³+20y【x²(y-x)】²
x(x-y)-y(y-x)+(x-y)²因式分解
x[x+y][x-y]-x[x-y]² 因式分解是多少?过程 要步奏讲解.
计算:21×101²-99²×21=------- 因式分解:1.(x-y)(x+y)-(x+y)&