標題:

快快快!!!!問幾題數學題!!

發問:

38. x/a+x/b=c/d find x 39.ax-b/x-d=e find x 5.-xy+4x

免費註冊體驗

 

此文章來自奇摩知識+如有不便請留言告知

最佳解答:

38) x/a+x/b=c/d xbd/abd+xad/abd=abc/abd xd(a+b)/abd=abc/abd xd(a+b)=abc x=abc/d(a+b) 39) ax-b/x-d=e x(a+b/d)=e x=e/(a+b/d) 5) -xy+4x x(-y+4)

其他解答:

have you learnt factorized? If yes, the solution of the fifthe question is simply............. -x(y - 4)................. you have known the answers of the first two questions..... 38. x = abc / ad + bd 39 . ..........the answer is not correct until now............ maybe I can tell you later|||||38. x/a+x/b=c/d (ax+bx)/ab=c/d ax+bx=abc/d x(a+b)=abc/d x=(abc/d)/(a+b) x=abc/(ad+db) 未寫完問題嗎?|||||38. x/a+x/b=c/d (a+b)x/ab=c/d x=abc/d(a+b) =abc/ad+ab 39.ax-b/x-d=e ax-b=ex-de (a-e)x=b-de x=b-de/a-e 2006-11-13 19:49:44 補充: 38. is wrong x=abc/ad+bd 2006-11-13 19:50:00 補充: 38. is wrong x=abc/ad+bd
文章標籤
創作者介紹

szw52ts91l的部落格

szw52ts91l 發表在 痞客邦 PIXNET 留言(0) 人氣()