问题标题:
计算:(a-b)^2n+1(b-a)^2n÷(b-a)^2n+2
问题描述:

计算:(a-b)^2n+1(b-a)^2n÷(b-a)^2n+2

边玉明回答:
  (a-b)^(2n+1)*(b-a)^2n÷(b-a)^2n+2   =(a-b)^(2n+1)*(b-a)^(2n-2n-2)   =(a-b)^(2n+1)*(b-a)^(-2)   =(a-b)^(2n+1)*[-(a-b)^(-2)]   =-(a-b)^(2n+1-2)   =-(a-b)^(2n-1)
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