Factorize the following:
x^4+4
thx~
Factorization一題（F。2）
2009-09-24 12:28 am
回答 (2)
2009-09-24 1:31 am
✔ 最佳答案
x^4 + 4= x^4 + 4x^2 + 4 - 4x^2
= (x^2)^2 + 2(2)(x^2) + 2^2 - 4x^2
= (x^2 + 2)^2 - 4x^2
= (x^2 + 2)^2 - (2x)^2
= (x^2 - 2x + 2)(x^2 + 2x + 2)
2009-09-23 23:51:27 補充：
This question is about F.4 level.
收錄日期: 2021-04-21 22:07:12
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20090923000051KK00817