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[ 1/1 Equation]
    Work: Find the solution of equation -4.3368/0.7048*1+x^(-1)+(1+x)^(-2)+(1+x)^(-3)+(1+x)^(-4)+(1+x)^(-5)+(1+x)^(-6)+(1+x)^(-7)+(1+x)^(-8)+(1+x)^(-9)+(1+x)^(-10)+(1+x)^(-11) = 0 .
    Question type: Equation
    Solution:
    After the equation is converted into a general formula, there is a common factor:
    ( x + 1 )( x +0 )
    From
        x + 1 = 0
        x + 0 = 0
    it is concluded that:：
        x₁=-1, it is the incremental root of the eqution.

x2=0	, it is the incremental root of the eqution.

    Solutions that cannot be obtained by factorization:
        x₃≈-0.083312 , keep 6 decimal places
        x₄≈0.278735 , keep 6 decimal places    
    There are 4 solution(s).
    There is(are) 2 additive root(s) and 2 real solutions.(Note:additive root, generated by computer, but not suitable for this equation.)


解程的详细方法请参阅：《方程的解法》

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