Overview: 6 questions will be solved this time.Among them
           ☆6 equations

[ 1/6 Equation]
    Work: Find the solution of equation 2x^2+5x+2 = 0 .
    Question type: Equation
    Solution:
    After the equation is converted into a general formula, it is converted into:
    ( x + 2 )( 2x + 1 )=0
    From
        x + 2 = 0
        2x + 1 = 0
    it is concluded that:：
        x₁=-2

x2=

-

1 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》
[ 2/6 Equation]
    Work: Find the solution of equation x^2-8x-6 = 0 .
    Question type: Equation
    Solution:
    The solution of the equation:
        x₁≈-0.690416 , keep 6 decimal places
        x₂≈8.690416 , keep 6 decimal places    
    There are 2 solution(s).

解程的详细方法请参阅：《方程的解法》
[ 3/6 Equation]
    Work: Find the solution of equation 10x^2-21x+2 = 0 .
    Question type: Equation
    Solution:
    After the equation is converted into a general formula, it is converted into:
    ( 10x - 1 )( x - 2 )=0
    From
        10x - 1 = 0
        x - 2 = 0
    it is concluded that:：

x1=

1 10

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》
[ 4/6 Equation]
    Work: Find the solution of equation 7x^2-19x-6 = 0 .
    Question type: Equation
    Solution:
    After the equation is converted into a general formula, it is converted into:
    ( 7x +2 )( x - 3 )=0
    From
        7x +2 = 0
        x - 3 = 0
    it is concluded that:：

x1=

-

2 7

x2=3

    
    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》
[ 5/6 Equation]
    Work: Find the solution of equation 12x^2-13x+3 = 0 .
    Question type: Equation
    Solution:
    After the equation is converted into a general formula, it is converted into:
    ( 3x - 1 )( 4x - 3 )=0
    From
        3x - 1 = 0
        4x - 3 = 0
    it is concluded that:：

x1=

1 3

x2=

3 4

    
    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》
[ 6/6 Equation]
    Work: Find the solution of equation 4x^2+4x-5 = 0 .
    Question type: Equation
    Solution:
    The solution of the equation:
        x₁≈-1.724745 , keep 6 decimal places
        x₂≈0.724745 , keep 6 decimal places    
    There are 2 solution(s).

解程的详细方法请参阅：《方程的解法》

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