(1)x²-1/x+1÷x²-2x+1/x²-x (2)(1/x+1-1/1-x)÷1/x
[(x+2)/(x²+2x)-(x-1)/(x²-4x+4)]÷(x-4)/x
计算:(1+1/x)·x²-2x+1/x²-1;(x²/x-1-2x/1-x)÷x/x-1
(x+1-1/1-x)÷(x-x²/x-1) (x-4/x-x-6+ x+2/x-3)÷x+1/x-3
化简{x²-2x分之x+2-x²-4x+4x分之x-1}除以X分之(x-1)(X-4)乘以(2-x)
化简 (3x/x-1 -x/x+1)÷x/x²-1
化简分式【(x/x-1)-(x/x²-1)】÷(x²-x/x²-2x+1),并从-1≤x≤
先化简再求值:(x+2/x²-2x - x-1/x²-4x+4)÷ x-4/x,其中x=3/2
先化简,再求值:[(x-2/x²+2x)-(x-1/x²+4x+4)]÷﹙x-4/x+2﹚,其中x&
2道分式计算[(x+4)(x-2)]/x³+2x²+x÷[(x-2)/x·(x+4)/(x+1)]2
计算:2x/(x-2)(x+1)÷(1-x/x+1)-x²+2x/x²-4?
先化简再求值(x-1/x-x-2/x+1)/(2x²-x/x²+2x+1)且x²-x-1
(x/x-1)+(5x-2)/x*x-x=1 求x(有图)