问题 计算题

计算:(a -b )6÷(b -a )3

答案

解法一:(a -b )6÷(b -a )3

                 = (b -a )6÷(b -a )3

                 = (b -a )6 -3= (b -a )3.  

解法二:(a -b )6÷(b -a )3

                = (a -b )6÷[ -(a -b )] 3

                = (a -b )6÷[ -(a -b )3]

            =-(a-b)6-3=-(a-b)3

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