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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 0.5(20-x)x+0.0625(10-x)(10-x) = 34.25 .
    Question type: Equation
    Solution:Original question:
     
1
2
(20 x ) x +
1
16
(10 x )(10 x ) =
137
4
    Remove the bracket on the left of the equation:
     Left side of the equation =
1
2
× 20 x
1
2
x x +
1
16
(10 x )(10 x )
                                             = 10 x
1
2
x x +
1
16
(10 x )(10 x )
                                             = 10 x
1
2
x x +
1
16
× 10(10 x )
1
16
x (10 x )
                                             = 10 x
1
2
x x +
5
8
(10 x )
1
16
x (10 x )
                                             = 10 x
1
2
x x +
5
8
× 10
5
8
x
1
16
x (10 x )
                                             = 10 x
1
2
x x +
25
4
5
8
x
1
16
x (10 x )
                                             =
75
8
x
1
2
x x +
25
4
1
16
x (10 x )
                                             =
75
8
x
1
2
x x +
25
4
1
16
x × 10 +
1
16
x x
                                             =
75
8
x
1
2
x x +
25
4
5
8
x +
1
16
x x
                                             =
35
4
x
1
2
x x +
25
4
+
1
16
x x
    The equation is transformed into :
     
35
4
x
1
2
x x +
25
4
+
1
16
x x =
137
4

    After the equation is converted into a general formula, it is converted into:
    ( x - 4 )( x - 16 )=0
    From
        x - 4 = 0
        x - 16 = 0

    it is concluded that::
        x1=4
        x2=16
    
    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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