please help me 在百度空间相册里

来源：学生作业帮助网 编辑：六六作业网 时间：2024/11/28 07:07:36
pleasehelpme在百度空间相册里pleasehelpme在百度空间相册里pleasehelpme在百度空间相册里(x-3)/(x²+6x+9)+x/(9-x²)=(x-3)

please help me 在百度空间相册里
please help me
在百度空间相册里

please help me 在百度空间相册里
(x-3)/(x²+6x+9) + x/(9-x²)
= (x-3) / (x+3)² - x / [(x+3)(x-3)]
= [ (x-3)² - x(x+3) ] / [ (x+3)²(x-3) ]
= (x² - 6x+9 - x² - 3x) / [ (x+3)²(x-3) ]
= (9-9x) / [ (x+3)²(x-3) ]
x=2代入得
(9 - 9*2) / [ (2+3)²(2-3) ]
= 9/25

上哪看？上百度空间相册的路怎么走？

先森，你是匿名啊········

please help me 在百度空间相册里 please please help me Please help me please to help me Please help me!Thanks! Help me,please! 英语翻译help me,please! please help me,ok? 英语翻译help me,please! help!somebody help!please no!please help me please help me 和help me please 有什么区别 Please help me.(改为反义疑问句) Please help me,______________? 帮我 PLEASE HELP ME please help me的中文 是什么花,please help me Please help me this problem. Help me please!Thank you! please help me!Thank you!