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[ 1/1 Equation]
    Work: Find the solution of equation （1-1.75i）（1+i）² = 1 .
    Question type: Equation
    Solution:
    After the equation is converted into a general formula, there is a common factor:
    ( i +0 )
    From
        i + 0 = 0
    it is concluded that:：

i1=0

    Solutions that cannot be obtained by factorization:
        i₂≈-1.522408 , keep 6 decimal places
        i₃≈0.093836 , keep 6 decimal places    
    There are 3 solution(s).

解程的详细方法请参阅：《方程的解法》

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