这个题怎么化简,要全程
3个回答
展开全部
[(x^2-x)/(x^2-2x+1)] . ( x- 1/x)
=[x(x-1)/(x-1)^2 ] . [ (x^2- 1)/x ]
=[x(x-1)/(x-1)^2 ] . [ (x- 1)(x+1)/x ]
=[x/(x-1) ] . [ (x- 1)(x+1)/x ]
=x .[ (x+1)/x ]
=x+1
=[x(x-1)/(x-1)^2 ] . [ (x^2- 1)/x ]
=[x(x-1)/(x-1)^2 ] . [ (x- 1)(x+1)/x ]
=[x/(x-1) ] . [ (x- 1)(x+1)/x ]
=x .[ (x+1)/x ]
=x+1
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展开全部
[x(x-1)/(x-1)^2] *[(x^2-1)/x]
=[x/(x-1)]*[(x-1)*(x+1)/x]
=x+1
=[x/(x-1)]*[(x-1)*(x+1)/x]
=x+1
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