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Mathematical calculation：
    Enter the mathematical formula directly and click the "Next" button to get the calculation answer.
    It supports mathematical functions (including trigonometric functions).
    Current location：Mathematical operation > History of Mathematical Computation > Answer

    Overview: 1 questions will be solved this time.Among them
           ☆1 equations

[ 1/1 Equation]
    Work: Find the solution of equation （x-3）（x-2）（x+4）（x+5）-60 = 0 .
    Question type: Equation
    Solution:Original question:
     ( x − 3)( x − 2)( x + 4)( x + 5) − 60 = 0
    Remove the bracket on the left of the equation:
     Left side of the equation = x ( x − 2)( x + 4)( x + 5) − 3( x − 2)( x + 4)( x + 5) − 60
                                             = x x ( x + 4)( x + 5) − x × 2( x + 4)( x + 5) − 3( x − 2)( x + 4)( x + 5)
                                             = x x x ( x + 5) + x x × 4( x + 5) − x × 2( x + 4)( x + 5)
                                             = x x x x + x x x × 5 + x x × 4( x + 5)
                                             = x x x x + x x x × 5 + x x × 4 x
                                             = x x x x + x x x × 5 + x x × 4 x
                                             = x x x x + x x x × 5 + x x × 4 x
                                             = x x x x + x x x × 5 + x x × 4 x
                                             = x x x x + x x x × 5 + x x × 4 x
                                             = x x x x + x x x × 5 + x x × 4 x
                                             = x x x x + x x x × 5 + x x × 4 x
                                             = x x x x + x x x × 5 + x x × 4 x
                                             = x x x x + x x x × 5 + x x × 4 x
                                             = x x x x + x x x × 5 + x x × 4 x
                                             = x x x x + x x x × 5 + x x × 4 x
                                             = x x x x + x x x × 5 + x x × 4 x
                                             = x x x x + x x x × 5 + x x × 4 x
                                             = x x x x + x x x × 5 + x x × 4 x
                                             = x x x x + x x x × 5 + x x × 4 x
                                             = x x x x + x x x × 5 + x x × 4 x
                                             = x x x x + x x x × 5 + x x × 4 x
                                             = x x x x + x x x × 5 + x x × 4 x
                                             = x x x x + x x x × 5 + x x × 4 x
                                             = x x x x + x x x × 5 + x x × 4 x
                                             = x x x x + x x x × 5 + x x × 4 x

    After the equation is converted into a general formula, there is a common factor:
    ( x + 3 )( x - 1 )
    From
        x + 3 = 0
        x - 1 = 0
    it is concluded that:：
        x1=-3
        x2=1

    Solutions that cannot be obtained by factorization:
        x3≈-5.582576 , keep 6 decimal places
        x4≈3.582576 , keep 6 decimal places    
    There are 4 solution(s).

解程的详细方法请参阅：《方程的解法》


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