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    总述:本次共解1题。其中
           ☆方程1题

〖 1/1方程〗
    作业:求方程 (x-3)(x-6)(x-4)(-x-2) = 0 的解.
    题型:方程
    解:原方程:
     ( x 3)( x 6)( x 4)( - x 2) = 0
    去掉方程左边的括号:
     方程左边 = x ( x 6)( x 4)( - x 2)3( x 6)( x 4)( - x 2)
                  = x x ( x 4)( - x 2) x × 6( x 4)( - x 2)3( x 6)( x 4)( - x 2)
                  = x x x ( - x 2) x x × 4( - x 2) x × 6( x 4)( - x 2)
                  = - x x x x x x x × 2 x x × 4( - x 2)
                  = - x x x x x x x × 2 + x x × 4 x
                  = - x x x x x x x × 2 + x x × 4 x
                  = - x x x x x x x × 2 + x x × 4 x
                  = - x x x x x x x × 2 + x x × 4 x
                  = - x x x x x x x × 2 + x x × 4 x
                  = - x x x x x x x × 2 + x x × 4 x
                  = - x x x x x x x × 2 + x x × 4 x
                  = - x x x x x x x × 2 + x x × 4 x
                  = - x x x x x x x × 2 + x x × 4 x
                  = - x x x x x x x × 2 + x x × 4 x
                  = - x x x x x x x × 2 + x x × 4 x
                  = - x x x x x x x × 2 + x x × 4 x
                  = - x x x x x x x × 2 + x x × 4 x
                  = - x x x x x x x × 2 + x x × 4 x
                  = - x x x x x x x × 2 + x x × 4 x
                  = - x x x x x x x × 2 + x x × 4 x
                  = - x x x x x x x × 2 + x x × 4 x
                  = - x x x x x x x × 2 + x x × 4 x
                  = - x x x x x x x × 2 + x x × 4 x
                  = - x x x x x x x × 2 + x x × 4 x
                  = - x x x x x x x × 2 + x x × 4 x


    方程化为一般式后,用因式分解法化为:
    ( x + 2 )( x - 3 )( x - 4 )( x - 6 )=0
    由
        x + 2 = 0
        x - 3 = 0

        x - 4 = 0
        x - 6 = 0

    得:
        x1=-2
        x2=3
        x3=4
        x4=6
    
    有 4个解。


解程的详细方法请参阅:《方程的解法》





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