[中學] Factoring

看板Math作者 (John G. Proakis)時間15年前 (2011/02/01 23:31), 編輯推噓0(0推 0噓 5→)
留言5則, 3人參與, 最新討論串1/1
Under what circumstances can A^2 + B^2 be factored? (The process of writing a polynomial as a product is called factoring.) A^2 + B^2 is a polynomial. 比如說能否因式分解下面這各式子 (x+2)^2 + y^2 -- ※ 發信站: 批踢踢實業坊(ptt.cc) ◆ From: 111.83.60.94
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02/01 23:38, , 1F
複數場?題目也太短= =
02/01 23:38, 1F
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02/01 23:47, , 2F
在甚麼情形下A^2 + B^2可被分解? 看不懂= =
02/01 23:47, 2F
※ 編輯: Proakis 來自: 111.83.60.94 (02/02 00:05)
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02/02 00:08, , 3F
問題是A和B是毫無關係的2個變數,你要怎麼分解
02/02 00:08, 3F
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02/02 00:11, , 4F
如果中間是個減號就能分解成(x+2+y)(x+2-y)
02/02 00:11, 4F
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02/02 00:12, , 5F
目前我不確定A跟B是單純的變數還是說A跟B是算式
02/02 00:12, 5F
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