1(a) factorize
9y^2+30y+16
(b)In each of the following, make the letter un the square brackets the subject of the formula.
1/y=(x-1)/(x+1)+1/z (x)
收錄日期: 2021-04-30 16:58:13
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20130929000051KK00235