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

[ 1/6 Equation]
    Work: Find the solution of equation 2x^2-3x-20 = 0 .
    Question type: Equation
    Solution:
    After the equation is converted into a general formula, it is converted into:
    ( 2x + 5 )( x - 4 )=0
    From
        2x + 5 = 0
        x - 4 = 0
    it is concluded that:：

x1=

-

5 2

x2=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》
[ 2/6 Equation]
    Work: Find the solution of equation 4x^2+24x+7 = 0 .
    Question type: Equation
    Solution:
    The solution of the equation:
        x₁≈-5.692582 , keep 6 decimal places
        x₂≈-0.307418 , 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 6x^2+x-35 = 0 .
    Question type: Equation
    Solution:
    After the equation is converted into a general formula, it is converted into:
    ( 2x + 5 )( 3x - 7 )=0
    From
        2x + 5 = 0
        3x - 7 = 0
    it is concluded that:：

x1=

-

5 2

x2=

7 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》
[ 4/6 Equation]
    Work: Find the solution of equation 2x^2+5x+7 = 0 .
    Question type: Equation
    Solution:    This equation has no real solution!
[ 5/6 Equation]
    Work: Find the solution of equation 6x^2-9x-6 = 0 .
    Question type: Equation
    Solution:
    After the equation is converted into a general formula, it is converted into:
    ( 2x + 1 )( x - 2 )=0
    From
        2x + 1 = 0
        x - 2 = 0
    it is concluded that:：

x1=

-

1 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》
[ 6/6 Equation]
    Work: Find the solution of equation 5y^2-8y-13 = 0 .
    Question type: Equation
    Solution:
    After the equation is converted into a general formula, it is converted into:
    ( y + 1 )( 5y - 13 )=0
    From
        y + 1 = 0
        5y - 13 = 0
    it is concluded that:：
        y₁=-1

y2=

13 5

    
    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》

Your problem has not been solved here? Please go to the Hot Problems section！