2/x+1-x-2/x²-1÷x²-2x/x²-2x+1计算
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![2/x+1-x-2/x²-1÷x²-2x/x²-2x+1计算](/uploads/image/z/813796-52-6.jpg?t=2%2Fx%2B1-x-2%2Fx%26%23178%3B-1%C3%B7x%26%23178%3B-2x%2Fx%26%23178%3B-2x%2B1%E8%AE%A1%E7%AE%97)
2/x+1-x-2/x²-1÷x²-2x/x²-2x+1计算
2/x+1-x-2/x²-1÷x²-2x/x²-2x+1计算
2/x+1-x-2/x²-1÷x²-2x/x²-2x+1计算
=2/(x+1)- (x-2)/(x+1)(x-1)×(x-1)²/x(x-2)
=2/(x+1)-(x-1)/x(x+1)
=2x/x(x+1)-(x-1)/x(x+1)
=(2x-x+1)/x(x+1)
=1/x