计算这个式子x+2x/(x²-1)-x²/x+1
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计算这个式子x+2x/(x²-1)-x²/x+1
计算这个式子x+2x/(x²-1)-x²/x+1
计算这个式子x+2x/(x²-1)-x²/x+1
1+2x/(x^2-1)
如果原题是
x+(x^2-1)/(2x)-x^2/x+1
=(x^2+2x-1)/(2x)