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 (x-15)(x-20) = 150 .
    Question type: Equation
    Solution:Original question:
     ( x 15)( x 20) = 150
    Remove the bracket on the left of the equation:
     Left side of the equation = x ( x 20)15( x 20)
                                             = x x x × 2015( x 20)
                                             = x x 20 x 15 x + 15 × 20
                                             = x x 20 x 15 x + 300
                                             = x x 35 x + 300
    The equation is transformed into :
      x x 35 x + 300 = 150

    After the equation is converted into a general formula, it is converted into:
    ( x - 5 )( x - 30 )=0
    From
        x - 5 = 0
        x - 30 = 0

    it is concluded that::
        x1=5
        x2=30
    
    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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