过程最好完整 (X+1)²(1-X)²/(X²-1)² ÷(X-1)²
过程最好完整 (X+1)²(1-X)²/(X²-1)² ÷(X-1)²
2(x²-1²)
(1)(x²-2x)²+2(x²-2x)+1
(x²-2x)²+2x²-4x+1
计算:[(x²-2x+1)/(x²-1)]÷[(x-1)(x²+x)]-x
分式计算,((x+1)²(1-x)²)/((x²-1)²)÷((x-1)²)/(
(x²-5x+6分之x²-3x+2)²/(x²-2x-3分之x-1)²
y=(x²+1)²/[(3x²+2)(2x²+3)],求最小值
1、若|x-1|+(y+3)²=0,则x²+y²=
1、x²+4y²+_______=(x-2y)²
1/√(x²+y²)的导数是多少
化简再求值[(x²+y²)²-4x²y²]÷(x²-y&su