Mathematics
         
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On line Solution of Monovariate Equation:
    Input any unary equation directly, and then click the "Next" button to obtain the solution of the equation.
    It supports equations that contain mathematical functions.
    Current location:Equations > Monovariate Equation > The history of univariate equation calculation > Answer

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

[ 1/1 Equation]
    Work: Find the solution of equation 105 = (n+1)/2×n .
    Question type: Equation
    Solution:Original question:
     105 = ( n + 1) ÷ 2 × n
    Remove the bracket on the right of the equation:
     Right side of the equation = n ×
1
2
n + 1 ×
1
2
n
                                               = n ×
1
2
n +
1
2
n
    The equation is transformed into :
     105 = n ×
1
2
n +
1
2
n

    After the equation is converted into a general formula, it is converted into:
    ( n + 15 )( n - 14 )=0
    From
        n + 15 = 0
        n - 14 = 0

    it is concluded that::
        n1=-15
        n2=14
    
    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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