分解因式：2a（a-3）2-6a2（3-a）-8a（a-3）．

短文改错（10%）
假如英语课上老师要求同学们交换修改作文，请你修改你同桌写的以下作文。文中共有10处语言错误，要求你在错误的地方增加、删除或修改某个单词。
增加：在缺词处加出加一个漏字（^），并在其下面写上该加的词。
删除：把多余的词用斜线（\）划掉。
修改：在错的词下划一横线，并在该词下面写上修改后的词。
注意： 1. 每处错误及其修改均仅限一词；
2. 只允许修改10处，多者(从第11处起)不计分。

例如：It was very nice to get your invitation to spend ^ weekend with you. Luckily I was the                        am     completely free then, so I’ll to say “yes”. I’ll arrive in Bristol at around 8 pm in Friday evening. on

Dear Andy,
I’m glad to learn that you or some of your classmates are coming to Hangzhou and that you will stay at my home. My parents and I are very pleasing to have you with us. Now let me to tell you what we have arranged for yourself. I know the school would organize a lot things for you to do in the morning. And in the afternoon, I’ll show you around and take you to some place of interest, like the West Lake, Qianjiang New City and so on. We’ll most stay at home in the evening watching TV, playing games or meeting people. I’m surely you’ll have a wonderful time here. I’m looking forward very much to meet you soon.
Yours sincerely
Li Yue