請問(k^3)-8=?!
唔該寫埋step:}}
有10分嫁,,*v*
F.4 math
2007-09-22 3:17 am
回答 (2)
2007-09-22 3:27 am
✔ 最佳答案
k^3 - 8 = k^3 - 2^3
= (k - 2) (k^2 + 2k + 2^2)
= (k - 2) (k^2 + 2k + 4)
參考: a^3 - b^3 =(a-b)(a^2+ab+b^2)
2007-09-22 3:19 am
咁k係咩???
收錄日期: 2021-04-13 19:07:22
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20070921000051KK02882