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 -2(x+1)(x-2) = 1 .
    Question type: Equation
    Solution:Original question:
      - 2( x + 1)( x 2) = 1
    Remove the bracket on the left of the equation:
     Left side of the equation = - 2 x ( x 2)2 × 1( x 2)
                                             = - 2 x ( x 2)2( x 2)
                                             = - 2 x x + 2 x × 22( x 2)
                                             = - 2 x x + 4 x 2( x 2)
                                             = - 2 x x + 4 x 2 x + 2 × 2
                                             = - 2 x x + 4 x 2 x + 4
                                             = - 2 x x + 2 x + 4
    The equation is transformed into :
      - 2 x x + 2 x + 4 = 1

    The solution of the equation:
        x1≈-0.822876 , keep 6 decimal places
        x2≈1.822876 , 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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