问个数学问题计算及时采纳要详细过程写给我采纳
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(x-1)+1/(x-1)+2
=(x-1)²/(x-1)+1/(x-1)+2(x-1)/(x-1)
=(x-1)²+1+2(x-1)/(x-1)
=x²-2x+1+1+2x-2/(x-1)
=x²/(x-1)
(x-1)+1/(x-1)+2
=(x-1)²/(x-1)+1/(x-1)+2(x-1)/(x-1)
=(x-1)²+1+2(x-1)/(x-1)
=x²-2x+1+1+2x-2/(x-1)
=x²/(x-1)
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