Factorize :
| x - 1 - 1 |
| - 1 x - 1 |
| - 1 - 1 x |
Determinant
2012-04-29 5:59 am
回答 (2)
2012-04-29 6:33 am
✔ 最佳答案
As follows:圖片參考：http://i453.photobucket.com/albums/qq252/tomchan1216/ScreenHunter_01Apr282231.jpg
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2012-04-29 6:27 am
Expand directly
x^3 - 1 - 1 - x - x - x
= x^3 - 3x - 2
= (x + 1)(x^2 - x - 2)
= (x + 1)(x - 2)(x + 1)
x^3 - 1 - 1 - x - x - x
= x^3 - 3x - 2
= (x + 1)(x^2 - x - 2)
= (x + 1)(x - 2)(x + 1)
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https://hk.answers.yahoo.com/question/index?qid=20120428000051KK00841