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 (360-280-x)(60+5x) = 7200 .
    Question type: Equation
    Solution:Original question:
     (360280 x )(60 + 5 x ) = 7200
    Remove the bracket on the left of the equation:
     Left side of the equation = 360(60 + 5 x )280(60 + 5 x ) x (60 + 5 x )
                                             = 360 × 60 + 360 × 5 x 280(60 + 5 x ) x (60 + 5 x )
                                             = 21600 + 1800 x 280(60 + 5 x ) x (60 + 5 x )
                                             = 21600 + 1800 x 280 × 60280 × 5 x x (60 + 5 x )
                                             = 21600 + 1800 x 168001400 x x (60 + 5 x )
                                             = 4800 + 400 x x (60 + 5 x )
                                             = 4800 + 400 x x × 60 x × 5 x
                                             = 4800 + 340 x x × 5 x
    The equation is transformed into :
     4800 + 340 x x × 5 x = 7200

    After the equation is converted into a general formula, it is converted into:
    ( x - 8 )( x - 60 )=0
    From
        x - 8 = 0
        x - 60 = 0

    it is concluded that::
        x1=8
        x2=60
    
    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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