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 (121+x)(300-2x)-10x-(300-2x)31 = 0 .
    Question type: Equation
    Solution:Original question:
     (121 + x )(3002 x )10 x (3002 x ) × 31 = 0
    Remove the bracket on the left of the equation:
     Left side of the equation = 121(3002 x ) + x (3002 x )10 x (3002 x ) × 31
                                             = 121 × 300121 × 2 x + x (3002 x )10 x (3002 x ) × 31
                                             = 36300242 x + x (3002 x )10 x (3002 x ) × 31
                                             = 36300252 x + x (3002 x )(3002 x ) × 31
                                             = 36300252 x + x × 300 x × 2 x (3002 x ) × 31
                                             = 36300 + 48 x x × 2 x (3002 x ) × 31
                                             = 36300 + 48 x x × 2 x 300 × 31 + 2 x × 31
                                             = 36300 + 48 x x × 2 x 9300 + 62 x
                                             = 27000 + 110 x x × 2 x
    The equation is transformed into :
     27000 + 110 x x × 2 x = 0

    The solution of the equation:
        x1≈-91.899539 , keep 6 decimal places
        x2≈146.899539 , 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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