Question

计算:(x-1/x-1/x)÷(x-2)/x2-x

Answer 1

解：原式=【(x-1)-1】/x×(x²-x)/x-2
=x-2/x × x(x-1)/(x-2)
=x-1

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Answer 2

(x-1/x-1/x)÷(x-2)/x2-x
=(x2-2/x)÷(x-2)/x(x-2)
=(x2-2)(x-1)/x-2