作者Proakis (John G. Proakis)
看板Math
標題[中學] Factoring
時間Tue Feb 1 23:31:39 2011
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
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◆ From: 111.83.60.94
1F：→ ericabab :複數場?題目也太短= = 02/01 23:38
2F：→ a88241050 :在甚麼情形下A^2 + B^2可被分解? 看不懂= = 02/01 23:47
※ 編輯: Proakis 來自: 111.83.60.94 (02/02 00:05)
3F：→ a88241050 :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
4F：→ Proakis :如果中間是個減號就能分解成(x+2+y)(x+2-y) 02/02 00:11
5F：→ Proakis :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