化简 (x2-2x+1/x2-1)÷﹙1+(x-3/x+1)
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化简 (x2-2x+1/x2-1)÷﹙1+(x-3/x+1)
化简 (x2-2x+1/x2-1)÷﹙1+(x-3/x+1)
化简 (x2-2x+1/x2-1)÷﹙1+(x-3/x+1)
(x2-2x+1/x2-1)÷﹙1+(x-3/x+1)
=(x-1)(x-1)/(x+1)(x-1) ÷﹙2(x-1)/x+1)
=(x-1)/(x+1) × (x+1)/2(x-1)
=1/2
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化简 (x2-2x+1/x2-1)÷﹙1+(x-3/x+1)
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