化简x²-1/x²+2x+1+2/x+1的结果是

化简x²-1/x²+2x+1+2/x+1的结果是
化简x²-1/x²+2x+1+2/x+1的结果是

化简x²-1/x²+2x+1+2/x+1的结果是
x²-1/x²+2x+1+2/x+1
=(x+1)(x-1)/(x+1)²+2/(x+1)
=(x-1)/(x+1)+2/(x+1)
=(x-1+2)/(x+1)
=1;
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