作者Proakis (John G. Proakis)
看板Math
标题[中学] Factoring
时间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.
比如说能否因式分解下面这各式子
(x+2)^2 + y^2
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1F：→ ericabab :复数场?题目也太短= = 02/01 23:38
2F：→ a88241050 :在甚麽情形下A^2 + B^2可被分解? 看不懂= = 02/01 23:47
※ 编辑: Proakis 来自: 111.83.60.94 (02/02 00:05)
3F：→ a88241050 :问题是A和B是毫无关系的2个变数,你要怎麽分解 02/02 00:08
4F：→ Proakis :如果中间是个减号就能分解成(x+2+y)(x+2-y) 02/02 00:11
5F：→ Proakis :目前我不确定A跟B是单纯的变数还是说A跟B是算式 02/02 00:12