分式计算,((x+1)²(1-x)²)/((x²-1)²)÷((x-1)²)/(
分式计算,((x+1)²(1-x)²)/((x²-1)²)÷((x-1)²)/(
计算:[(x²-2x+1)/(x²-1)]÷[(x-1)(x²+x)]-x
分式计算,(1)a²-4b²\3ab² × ab\a-2b (2)x²-x\x-
计算:(1-x/3-x)²÷(x²-6x+9/9-x²)²•1/(x
(1)(x²-2x)²+2(x²-2x)+1
(x²-2x)²+2x²-4x+1
化简分式 (1)x²+x/x²-1 (2)x²-9/x²-6x+9
(x²-5x+6分之x²-3x+2)²/(x²-2x-3分之x-1)²
计算 2(x²-x+1)-(-2x+3x²)+(1-x)
过程最好完整 (X+1)²(1-X)²/(X²-1)² ÷(X-1)²
计算分式加减1、4/(x-2)-(x-6)/(2-x)2、(x-y)²/(2xy)-(x²-y²
化简再求值[(x²+y²)²-4x²y²]÷(x²-y&su