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Yahoo!奇摩知識+ - 分類問答 - 科學常識 - 發問中
Yahoo!奇摩知識+ - 分類問答 - 科學常識 - 發問中
數學次方的展開,計算問題
Jul 8th 2013, 08:08

(1)
(20)的1001次方展開後最接近下列何數,A1200B1300C1400D1500
答案是B請教我過程
(2)
設4的3X次方=13,2的6X+1次方=?
答案是62,但他4的3X次方不是等於2的6X次方,+2不就是64,答案怎會這樣?
(3)
化簡3的n+1次方分之3的n+3次方-4X3的n-1次方
答案是9分之77,我算到最後的式子是9-4X3的n次方除以3但n怎算

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