factorize
1.)x^4-x^2
2.)x^4-1
simplify
1 / x^4-x^2 - 1 / x^4-1
solve for x
3^x+1 - 3^x =18
F.3 Maths
2007-09-28 2:50 am
回答 (1)
2007-09-28 3:19 am
✔ 最佳答案
1.)x^4-x^2=(x^2)^2-x^2
=(x^2+x)(x^2-x)
2.)x^4-1
=(x^2)^2-1^2
=(x^2+1)(x^2-1)
參考: 自己
收錄日期: 2021-05-01 15:55:09
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20070927000051KK02753