计算 (x-1/x)/(x+1/x-2)
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计算(x-1/x)/(x+1/x-2)计算(x-1/x)/(x+1/x-2)计算(x-1/x)/(x+1/x-2)原式=[(x-1)/x][(x-2)/(x+1)]=(x-1)(x-2)/[x(x+1
计算 (x-1/x)/(x+1/x-2)
计算 (x-1/x)/(x+1/x-2)
计算 (x-1/x)/(x+1/x-2)
原式=[(x-1)/x][(x-2)/(x+1)]
=(x-1)(x-2)/[x(x+1)]
(X^2-3X+2)/(X^2+X)
原式=(x^2-1)/(x^2-2x+1)=(x+1)(x-1)/(x-1)^2=(x+1)/(x-1)
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