先化简[1+1/(x-1)]÷x/(x²-1),再选择一个恰当的x值代入并求值

x-1/x÷(x-1/x) x/x+(1-x)/x-1/x *-----------------------------------------------*| 6 4 X | 8 X X | X X 5 || X X X | X X X | X 7 8 || X X X | X X X | X X X ||---------------+---------------+--------------- || X X X | X X X | 5 1 X || X X X | X 6 X | X X X || 8 X X | 3 5 X | 2 X X || 填九宫格帮帮忙.x x 6 x x 7 x x 98 x x x 3 x 1 x x 9 x x 6 x 5 x 3 x x x 3 x x x x 1 8x x x 9 x 1 x x x2 1 x x x x 6 x x x 6 x 7 x 3 x x 1 x x 9 x 2 x x x 47 x x 8 x x 5 x x 先化简 再求值 x^2-1/x^2-2x+1÷x+1/x-1×1-x/1+x 七年级下册政治复习提纲(山东人民出版社)第五单元是 青春的脚步 青春的气息别弄错了啊!格式：X X X X X X X X X 1、X X X X X X X X X X.2、X X X X X X X X X.3、X X X X X X X X X X X. 化简(x^2-2x+1)/(x^2+1)÷(x-1)/(x^2+x)-x [x^2+2x-8/x^3+2x^2+x]÷[(x-2/x)×(x+4/x+1)]化简[x^2+2x-8/x^3+2x^2+x]÷[(x-2/x)×(x+4/x+1)]化简 【{x²-4x+4/x²-4}-x/x+2】÷x-1/x+2 (x+1)(x-1)(x-x+1)(x+x+1) 分解因式----（X*X-X)(X*X-X-2)+1 (x+1-1/1-x)÷(x-x²/x-1) (x-4/x-x-6+ x+2/x-3)÷x+1/x-3 先化简代数式再求值(3/x+1 - x+1)÷x²-2x/x+1,其中x满足方程x/x-1+1/x=1 先化简,再求值:x^2+2x+1/x+2 ÷x^2-1/x-1 - 1-x-x^2/x+2,其中x=2014 X^-1/X^+X÷(x-x/2x-1) 先化简,再计算,其中x是一元二次方程x^-2x-2=0的正数根 X(X-1)=X 1.1/x|x/(x+1)| 先化简.在求值:（x+2/x²-2x-x-1/x²-4x+4）÷x²-16/x²+4x