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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 (s+1)*(s+2)*(s+3) = 0 .
    Question type: Equation
    Solution:Original question:
     ( s + 1)( s + 2)( s + 3) = 0
    Remove the bracket on the left of the equation:
     Left side of the equation = s ( s + 2)( s + 3) + 1( s + 2)( s + 3)
                                             = s s ( s + 3) + s × 2( s + 3) + 1( s + 2)( s + 3)
                                             = s s s + s s × 3 + s × 2( s + 3) + 1( s + 2)( s + 3)
                                             = s s s + s s × 3 + s × 2 s + s × 2 × 3
                                             = s s s + s s × 3 + s × 2 s + s × 6 + 1
                                             = s s s + s s × 3 + s × 2 s + 6 s + 1
                                             = s s s + s s × 3 + s × 2 s + 6 s + 1
                                             = s s s + s s × 3 + s × 2 s + 6 s + 1
                                             = s s s + s s × 3 + s × 2 s + 6 s + 1
                                             = s s s + s s × 3 + s × 2 s + 9 s + 1
                                             = s s s + s s × 3 + s × 2 s + 9 s + 1
                                             = s s s + s s × 3 + s × 2 s + 9 s + 1
                                             = s s s + s s × 3 + s × 2 s + 11 s + 1
    The equation is transformed into :
      s s s + s s × 3 + s × 2 s + 11 s + 1 = 0

    After the equation is converted into a general formula, it is converted into:
    ( s + 3 )( s + 2 )( s + 1 )=0
    From
        s + 3 = 0
        s + 2 = 0
        s + 1 = 0
    it is concluded that:：
        s1=-3
        s2=-2
        s3=-1    
    There are 3 solution(s).

解程的详细方法请参阅：《方程的解法》


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