Overview: 3 questions will be solved this time.Among them
           ☆2 inequalities
           ☆1 equations

[ 1/3Inequality]
    Assignment:Find the solution set of inequality 10-10x >0 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
        10 - 10 * x >0         (1)

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    From inequality(1)：
         x < 1

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    The final solution set is :
         x < 1
[ 2/3Inequality]
    Assignment:Find the solution set of inequality 10-10x-10x^(2) >0 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
        10 - 10 * x - 10 * x ^ ( 2 ) >0         (1)

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    From inequality(1)：
         -1.618034 < x < 0.618034

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    The final solution set is :
         -1.618034 < x < 0.618034
[ 3/3 Equation]
    Work: Find the solution of equation 10-10x-10x^(2)-10x^(3) = 0 .
    Question type: Equation
    Solution:
    the solutions is:
        x≈0.543689 , keep 6 decimal places    
    There are 1 solution(s).

解方程的详细方法请参阅：《方程的解法》

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