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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 (5/2)(5/2)-(3-x)(3-x) = 9-xx .
    Question type: Equation
    Solution:Original question:
     (5 ÷ 2)(5 ÷ 2)(3 x )(3 x ) = 9 x x
    Remove the bracket on the left of the equation:
     Left side of the equation = 5 ÷ 2 × (5 ÷ 2)(3 x )(3 x )
                                             =
5
2
(5 ÷ 2)(3 x )(3 x )
                                             =
5
2
× 5 ÷ 2(3 x )(3 x )
                                             =
25
4
(3 x )(3 x )
                                             =
25
4
3(3 x ) + x (3 x )
                                             =
25
4
3 × 3 + 3 x + x (3 x )
                                             =
25
4
9 + 3 x + x (3 x )
                                             = -
11
4
+ 3 x + x (3 x )
                                             = -
11
4
+ 3 x + x × 3 x x
                                             = -
11
4
+ 6 x x x
    The equation is transformed into :
      -
11
4
+ 6 x x x = 9 x x

    the solutions is:
        x≈1.958333 , keep 6 decimal places
    
    There are 1 solution(s).


解方程的详细方法请参阅:《方程的解法》



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