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 (20-2x)(10-2x) = 128 .
    Question type: Equation
    Solution:Original question:
     (202 x )(102 x ) = 128
    Remove the bracket on the left of the equation:
     Left side of the equation = 20(102 x )2 x (102 x )
                                             = 20 × 1020 × 2 x 2 x (102 x )
                                             = 20040 x 2 x (102 x )
                                             = 20040 x 2 x × 10 + 2 x × 2 x
                                             = 20040 x 20 x + 4 x x
                                             = 20060 x + 4 x x
    The equation is transformed into :
     20060 x + 4 x x = 128

    The solution of the equation:
        x1≈1.315342 , keep 6 decimal places
        x2≈13.684658 , 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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