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Yahoo!奇摩知識+ - 分類問答 - 科學常識 - 已解決
Yahoo!奇摩知識+ - 分類問答 - 科學常識 - 已解決 
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國二上學期的數學題
Aug 7th 2013, 09:45

阿珠.阿花分別寫出一個一元二次式,阿珠的二次式各項係數總和是5,阿花只知自己的二次式最高次係數為4,算不出各項係數總和,後來阿珠把兩式相加,所得各項係數和是3,則阿花所寫的二次式各項係數總和為( )?

自修給的詳解只寫了3-5=-2,不懂為何求詳解謝謝!!

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