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

[ 1/1 Equation]
    Work: Find the solution of equation 2x＾4-x＾2 = 28 .
    Question type: Equation
    Solution:
    After the equation is converted into a general formula, it is converted into:
    ( x + 2 )( x - 2 )=0
    From
        x + 2 = 0
        x - 2 = 0
    it is concluded that:：
        x₁=-2
        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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