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 (19-x)(300+30x) = 6300 .
    Question type: Equation
    Solution:Original question:
     (19 x )(300 + 30 x ) = 6300
    Remove the bracket on the left of the equation:
     Left side of the equation = 19(300 + 30 x ) x (300 + 30 x )
                                             = 19 × 300 + 19 × 30 x x (300 + 30 x )
                                             = 5700 + 570 x x (300 + 30 x )
                                             = 5700 + 570 x x × 300 x × 30 x
                                             = 5700 + 270 x x × 30 x
    The equation is transformed into :
     5700 + 270 x x × 30 x = 6300

    After the equation is converted into a general formula, it is converted into:
    ( x - 4 )( x - 5 )=0
    From
        x - 4 = 0
        x - 5 = 0

    it is concluded that::
        x1=4
        x2=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》



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