(x^2-1)/(x^2+2x+1)约分分式

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(x^2-1)/(x^2+2x+1)约分分式(x^2-1)/(x^2+2x+1)约分分式(x^2-1)/(x^2+2x+1)约分分式原式=(X+1)(X-1)/(X+1)^2=(X-1)/(X+1)(

(x^2-1)/(x^2+2x+1)约分分式
(x^2-1)/(x^2+2x+1)约分分式

(x^2-1)/(x^2+2x+1)约分分式
原式=(X+1)(X-1)/(X+1)^2=(X-1)/(X+1)

(x-1)/(x+1)