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 (700-10x)(x+40) = 2000 .
    Question type: Equation
    Solution:Original question:
     (70010 x )( x + 40) = 2000
    Remove the bracket on the left of the equation:
     Left side of the equation = 700( x + 40)10 x ( x + 40)
                                             = 700 x + 700 × 4010 x ( x + 40)
                                             = 700 x + 2800010 x ( x + 40)
                                             = 700 x + 2800010 x x 10 x × 40
                                             = 700 x + 2800010 x x 400 x
                                             = 300 x + 2800010 x x
    The equation is transformed into :
     300 x + 2800010 x x = 2000

    The solution of the equation:
        x1≈-38.150729 , keep 6 decimal places
        x2≈68.150729 , keep 6 decimal places
    
    There are 2 solution(s).


解程的详细方法请参阅:《方程的解法》



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