知识点梳理
因式分解中的四个注意：1.首项有负常提负，这里的“负”，指“负号”。如果的第一项是负的，一般要提出负号，使括号内第一项系数是正的；2.各项有“公”先提“公”，这里的“公”指“公因式”。如果多项式的各项含有公因式，那么先提取这个公因式，再进一步分解因式；3.某项提出莫漏1，这里的“1”，是指多项式的某个整项是公因式时，先提出这个公因式后，括号内切勿漏掉1；4.括号里面分到“底”，分解因式，必须进行到每一个多项式因式都不能再分解为止。即分解到底，不能的意思。其中包含提公因式要一次性提“干净”，不留“尾巴”，并使每一个括号内的多项式都不能再分解。在没有说明化到实数时，一般只化到就够了，有说明实数的话，一般就要化到实数！。
整理教师:&&
举一反三（巩固练习，成绩显著提升，去）
根据问他()知识点分析，
试题“请先阅读下列解题过程，再解答问题．已知&x2+x-...”，相似的试题还有：
已知x2+x+3=0，求x5+3x4+2x3+2x2-10x的值．
请阅读下面的解题过程：已知x2+x-1=0，求x3+2x2+3的值．解：x3+2x2+3=x3+x2+x2-x+x+3=x(x2+x-1)+(x2+x-1)+4=0+0+4=4仿照以上的解题过程解答下题．已知1+x+x2+x3=0，求x+x2+x3+…+x2008的值．
已知x2+x+1=0，求x3-x2-x+7的值．求解答过程：阅读表达：阅读下面短_百度知道
求解答过程：阅读表达：阅读下面短
Not only will you save time and money.
1，然后将答案写到相应的位置上(请注意问题后的词数要求)? &nbsp, but you may also rediscover the pleasure of true communication. What is the main idea of Paragraph 3? Do you hardly ever use your ph&nbsp. The main symptoms are a strong desire to text
messages, and bad moods, make a point of spending quality time with friends and family, as with many addictions. Experts warn that
text addiction is likely to become the most common form of add ________________________________________________________________________ 3. What do experts say
________________________________________________________________________ 2. M [3] So what can you do if you think you&nbsp? Do you frequently ignore &nbsp? (no more than 5 words) &&&nbsp, anxiety and relationship problems, is the desire to escape from emotional difficu&nbsp, low spirits and a lack of
self-confidence if mess & &nbsp. What emotional difficulties may be the caus[2] If _____
阅读表达;&nbsp.
&nbsp. A textaholic can be defined as someone who is addicted to sending and receiving messages? Are you anxious and restless if you
are separated fr& ________________________________________________________________________ 4, and make time to re-learn the art of face-to-face conversation instead of conducting your
relationships by me&nbsp. How does the author introduce the topic of the text. Make sure you resist the urge to answer every message you receive? (no more than 8 words)&&& ________________________________________________________________________ 5;& [1] Do you spend over an hour each day texting messages to your friends, which takes precedence (优先) over everything else? (no more than 5 words)& && &nbsp. Fill in the blank in Paragraph 2 with proper words? (no more than 14 words)&&nbsp,&nbsp。
&& &nbsp. (no more than 8 words)&&nbsp, and consider leaving your mobile phone behind occasionally when you go out, and do your thumbs hurt f&nbsp? The key is to get your life back in balance, especially among the
young. The root of the problem, then it is very possible that you are a textaholic, and other activities to check your phone for messages：阅读下面短文并回答问题
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By asking/raising questions. How to get rid of text addiction.
4. 5. 3, especially among the young. It may become the most common form of addiction. stress anxiety relationship problems. you answer "yes" to any of the questions.
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求解答过程：阅读欣赏。 　　
本语段运用哪些方法刻画人物反映其性格、“店内外充满快活的空气”在原小说中反复出现。他对人说话。”&nbsp。&&nbsp，可是又脏又破！”孔乙己睁大眼睛说，有什么表达效果、作者介绍孔乙己姓名的来历、从字里行间可以体会出作者对孔乙己这个人物是什么态度？为什么，似乎十多年没有补。
4，教人半懂不懂的。因为他姓孔;&nbsp，总是满口之乎者也;
1，“你一定又偷了人家的东西了，什么“者乎”之类、“偷”和“窃”是一对同义词？”接连便是难懂的话，前者是_________________后者是_______________，对柜里说;& __________________________________________________________________ 10，“孔乙己？&nbsp，道……”表明了孔乙己_______________________________的迂腐性格。
出九文大钱？ __________________________________________________________________
11？ __________________________________________________________________
7，引得众人都哄笑起来，总是满口之乎者也，酒客取笑孔乙己偷东西？ __________________________________________________________________ 9。&nbsp、“他对人说话，别人便从描红纸上的“上大人孔乙己”&nbsp、最能表现孔乙己性格特征的外貌描写的句子是_________________________________________________________________________，它突出了孔乙己_________________。孔乙己一到店？ __________________________________________________________________ 8，皱纹间时常夹些伤痕？我前天亲眼见你偷了何家的书，“你怎么这样凭空污人清白……”表现了孔乙己什么性格特点，教人半懂不懂的。他们又故意的高声嚷道。
3，所有喝酒的人便都看着他笑;&nbsp！”他不回答，有的叫道，替他取下一个绰号，是为了说明____________________：店内外充满了快活的空气;&nbsp。”孔乙己便涨红了脸、“站着喝酒”说明孔乙己_________________;&&nbsp，它们语体色彩的差别在于;这半懂不懂的话里、孔乙己睁大眼睛说，叫做孔乙己，“你怎么这样凭空污人清白……”“什么清白;&nbsp；一部乱蓬蓬的花白的胡子、文中加粗的“排”字能否换为“拿”或“掏”;
5，什么“君子固穷”。
2，要一碟茴香豆，用意是什么，额头上青筋条条绽出。穿的虽然是长衫，吊着打;&nbsp，“孔乙己便涨红了脸，也没有洗，“温两碗酒。他身材很高大、作者写人们对孔乙己的态度，而又“穿长衫”说明孔乙己_________________，你脸上又添了新伤疤了;这句话表现了孔乙己_____________________的性格特征说明他_________________；青白脸色
阅读欣赏;&nbsp。
　　孔乙己是站着喝酒而穿长衫的惟一的人，首句中的“惟一”不能去掉
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&nbsp，放不下读书人的架子。 9; 5、既批判又同情; 3，死要面子、迂腐、社会地位低下; 11，可是又脏又破、动作，似乎十多年没有补。&nbsp、口语；受封建教育的毒害很深&nbsp。因为换后不能突出孔乙己拮据而穷酸却又装腔作势的神气&nbsp。&&nbsp、肖像、他社会地位低下。&nbsp、自欺欺人、不能换; 7，以乐衬哀、“穿的虽然是长衫，特殊身份、表现了孔乙己事实上并不清白却想要清白的名声。 8、语言，好卖弄学问、增加悲剧气氛，也没有洗”&nbsp。 10;& 6，身份卑微&nbsp；书面语、表明当时社会中人与人之间的冷酷无情、神态; 4;&nbsp；又恼又羞; 2
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avoid buying&& 10;&nbsp. taste&&& &nbsp.added into& 3.performance&&&nbsp. participate/ take part&& &&nbsp. control&7;&&&nbsp. Exercise&&&&&4;
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求解答过程：如下图，是现在流行的
//c.hiphotos，而且实用://c
如下图.jpg" esrc="http.jpg" esrc="http。每一个顶点处都有一个挂钩（连在轴上）不仅美观://c，它是用木条（四长四短）构成的几个连续的菱形（四条边都相等）.jpg" target="_blank" title="点击查看大图" class="ikqb_img_alink">
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