先化简(1+1/x-1)÷x/(x-1)(x+1),然后再从不等式1/2(3x+4)+3≤7的解集中选择一个恰当的解代人求值
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x-1/x÷(x-1/x)
x/x+(1-x)/x-1/x
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(x+1)(x-1)(x-x+1)(x+x+1)
分解因式----(X*X-X)(X*X-X-2)+1
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(X-1)=X
1.1/x|x/(x+1)|
先化简 再求值 x^2-1/x^2-2x+1÷x+1/x-1×1-x/1+x
x/x-1[1+(x-1/x)]
】x(x+1)+x^2(x-1)
1/(1-x)+1/(1+x)+2/(1+x*x)+4/(1+x*x*x*x)+8/(1-x*x*x*x*x*x*x*x)怎么做
(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