计算：x^2+1/x^2-1+x^2-2/1-x^2

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计算：x^2+1/x^2-1+x^2-2/1-x^2计算：x^2+1/x^2-1+x^2-2/1-x^2计算：x^2+1/x^2-1+x^2-2/1-x^2x^2+1/x^2-1+x^2-2/1-x^

计算：x^2+1/x^2-1+x^2-2/1-x^2
计算：x^2+1/x^2-1+x^2-2/1-x^2

计算：x^2+1/x^2-1+x^2-2/1-x^2
x^2+1/x^2-1+x^2-2/1-x^2
=(x^2+1-x^2+2)/(x^2-1)
=3/(x^2-1)
在右上角点击【评价】,然后就可以选择【满意,问题已经完美解决】了.

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