字典翻译 问答 其它 (m-n+p)(m+n-p)等于多少
问题标题:
(m-n+p)(m+n-p)等于多少
问题描述:

(m-n+p)(m+n-p)等于多少

刘利群回答:
  (m-n+p)(m+n-p)   =[m-(n-p)][m+(n-p)]   =m²-(n-p)²   =m²-n²+2np-p²
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