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

[ 1/2Inequality]
    Assignment:Find the solution set of inequality x^2-x-6 <= 0 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
         x ^ 2 - x - 6 <= 0         (1)

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    From inequality(1)：
         -2 ≤ x ≤ 3

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    The final solution set is :
         -2 ≤ x ≤ 3
[ 2/2 Equation]
    Work: Find the solution of equation x^2+2x-8 = 0 .
    Question type: Equation
    Solution:
    After the equation is converted into a general formula, it is converted into:
    ( x + 4 )( x - 2 )=0
    From
        x + 4 = 0
        x - 2 = 0
    it is concluded that:：
        x₁=-4
        x₂=2    
    There are 2 solution(s).

解一元二次方程的详细方法请参阅：《一元二次方程的解法》

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