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

x1=-1

x2=0

x3=1

x4=1

    Solutions that cannot be obtained by factorization:
        x₅≈-3.141336 , keep 6 decimal places
        x₆≈-0.484862 , keep 6 decimal places
        x₇≈2.626198 , keep 6 decimal places    
    There are 7 solution(s).

解程的详细方法请参阅：《方程的解法》

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