(10 + a) x (10 + b) = 10 x (10 + a + b) + ab
挺好,但也没啥神奇的
所有跟帖:
• Exactly!!! -泠风- ♀ (0 bytes) () 10/19/2011 postreply 13:40:25
• Exactly!!! -泠风- ♀ (0 bytes) () 10/19/2011 postreply 13:40:25
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