2022年2022年初一数学平方差完全平方公式

1、精选学习资料 - - - 欢迎下载warm franco-prussia n pea ce and harm ony and the new year greeting cards、 and the publi city photo gallery a nd the 2021 "law a nd usage、 law -abi ding" holler、 promoti onal material s such a s cale ndars、 market day、 festival "community law"、 "legal in rur

2、al" activities. mea nwhil e、 the county 9 tow nships tow ns legal office 85 villages、 4 community "two committees" cadre carried out against t he pe ople' s mediation law a nd sta ndardized legal docume nts、 the r ural land contracting la w and t he rule of law training tour of th

3、e m arriage act and other laws a nd regul ations. mea nwhile、 the party members of the party school teachi ng resource s and annually to t he village community the favorable opport unity for the county clerk traini ng 23、000 rural "pave the way for the law" and the 1972 "legal advocac

4、y center" legal publicity and education、 increase their use of legal means to ma nage r ural service s、 the a bility to pr event and deal with conflict s and disputes. assessment points 3 poi nts、 si nce a ssessment 3 points 13. incre ased on farmers worker s franco-prussian e ducation efforts、

5、 regularly in-depth to farmers w orkers concentrated live to、 a nd w ork pla ces a nd the main activitie place s carrie d out reg ular of rule of law education; insisted "w ho compete nt who franco-pr ussia n、 and w ho la bor w ho franco-prussia n" of work pri nciples、 state-ow ned e nterp

6、rise s、 labor units esta blished ha s farmers workers conti nues t o franco-prussian e ducation system、 regularly or not reg ularly organi zation carried out e ducation trai ning. franco -pr ussian union-relate d functions i n the county fairgrounds、 stati on di stribution ce nter for migrants、 lega

7、l servi ce through the establi shme nt of enquiry points a nd propaga nda material s、 se nt out vans、 station ele ctroni c di splay rolli ng、 installation of car popularizati on a nime and other forms of floating on t he rule of law publicity and educati on activities. positive retur n during the le

8、gal education of migrant workers、 improve migrant workers ' law conce pt and awareness of la bor rights a ccordi ng to law. for five years、 and floating population of migrant workers、 t he rule of law publicity and e ducation activities rea ched more tha n 600 times、 i ssue the labor contract la

9、 w 、 the census law 、 literatur e、 more tha n 10、000 copie s. assessment points 3 poi nts、 si nce asse ssment 3 poi nts three、 and to innovati on seeking development、 further dee pening rul e of law publi city education of way method、 solid adva nce "65" franco-prussian target task of comp

10、leted assessment poi nts 30 poi nts、 si nceassessme nt 30 points 1. t o "legal six into" activities for carrier、 t o i county 193 support rule of law publicity literary team for relies on、 take masses joy lesee of nati onal dance、 a nd sket ch、 publ icity way、 a ctive adva nce are a withi

11、n rule of law publicity educati on a ctivities、 county minority masses、 and religious cl ergy and religi ous pe ople' s legal aware ness i s increa sed furt her. check with 3 poi nts、 scoring 3 poi nts 2. pr omote "legal six kinds of enteri ng" activities、 a nd vigor ously expand "

12、;law six kinds of enteri ng" connotation a nd extension activitie s、 establi sh a "legal six kinds of enteri ng" model typi cal、 typi cal leadi ng and exemplary role i n prom oting the r ule of law publ icity and educati on w ork in our count y、 the county set up "legal six kinds

13、 of enteri ng" model typical of 11. check with 3 poi nts、 self-evaluati on-3 3. carryi ng out "who is i n charge of who franco-prussian、 who law e nforceme nt who legal" principl e、 ena ctment of the xx county impleme nt "who i s in charge of who平方差完全平方公式三解答题（共26 小题）5运算：+y）（ 1）（

14、x y）（ x+y ）（ x 22123（ 2）（ a 2b+c）（ a+2b c） 6运算：2 124×1227运算：8（ x 2y+z ）（ x+2y+z ） 9运用乘法公式运算（；（ 1）（ x+y ） 2xy ） 2（ 2）（ x+y 2）（ x y+2 ）；（ 3） 79.8×80.2；（ 4） 19.92 10化简：（ m+n 2）（ m+n+2 ） 11（x 2ym ）（ x 2y+m ）12运算（ 1）（ a b+c d）（ c a d b）；（ 2）（ x+2y ）（ x 2y）（ x4 8x2y24 +16y ）精品学习资料精选学习资料 - - - 欢迎

15、下载13运算： 2021222007+2006220052+222 1 精品学习资料精选学习资料 - - - 欢迎下载14利用乘法公式运算： （a 3b+2c ）（ a+3b 2c）22精品学习资料精选学习资料 - - - 欢迎下载 47 94×27+27 精品学习资料精选学习资料 - - - 欢迎下载精品学习资料精选学习资料 - - - 欢迎下载15已知： x22 y =20 ,x+y=4 ,求 x y 的值精品学习资料精选学习资料 - - - 欢迎下载精品学习资料精选学习资料 - - - 欢迎下载16观看以下各式： （ x 1）（x+1 ） =x2 1；（ x 1）（ x 23

16、1；（ x 1）（ x 3241+x+1 ） =x 精品学习资料精选学习资料 - - - 欢迎下载+x+1 ） =x+x（ 1）依据上面各式的规律得：（ x 1）（ x m1+x m2 +xm3+x+1 ） =；（其中 n 为正整数）；精品学习资料精选学习资料 - - - 欢迎下载+2（ 2）依据这一规律,运算1+2+2 234+2 +26869+2的值精品学习资料精选学习资料 - - - 欢迎下载17先观看下面的解题过程,然后解答问题：24精品学习资料精选学习资料 - - - 欢迎下载题目：化简（ 2+1 ）（24+1）（ 2+1）242244 1）（ 248精品学习资料精选学习资料 - -

17、 - 欢迎下载解：（ 2+1）（ 22+1）（ 2+1） =（ 2 1）（ 2+1 ）（ 2+1 ）（ 2+1） =（2 1）（ 2+1）（ 2+1）=（ 2+1） =2 1精品学习资料精选学习资料 - - - 欢迎下载4864精品学习资料精选学习资料 - - - 欢迎下载问题：化简（ 3+1 ）（32+1）（ 3+1）（ 3+1）（ 3+1）精品学习资料精选学习资料 - - - 欢迎下载franco-pr ussia n、 w ho law e nforceme nt who legal literacy" of the applicati on of the pri nci pl

18、es at work law pu 2021、 6th issue d the si ngle . is the back bone area the rule of law publicity a nd educati on. assessment-2-、 self-evaluati on-2 7. "65" franco-prussian w ork yilai、 i county active usi ng "3.8" women' s day、 a nd "mar ch fully rule publi city months&

19、quot; and "3.15" consumer s interests protecti on day、 a nd "five or four" yout h da y、 and "6.24" internati ona l drug day、 a nd "6.25" land day for opportunity、 combine d "12.4" national constitution day cum national ruleof law publicity day、 m ajo

20、r activities、 and important node、 using fair day carrie d out forms of rule of law publicity topic a ctivities、 on wome n interest s guarantee s method、 and marriage method、 and land method、 and water a nd the la w on notar y、 the people's mediation la w and other professi onal la w legal advoca

21、cy w ork. in five years、 distri bute all ki nds of rule of law i nformation materials 126、700、 acce pts all kinds of legal advi ce 18、000 visitors、 posti ng signs more tha n 4、000 articles、 achieve legal literacy does not remain dead、 keep. check with 3 poi nts、 self-eval uation-3 8. soli d adva nce

22、 r ule of law cult ure construction activitie s、 "65" franco -prussi an w ork yilai、 in county carrie d out has "chi nese soul. flying dream" rule of law readi ng activitie s; septem ber 2021、 "rule of law culture construction model base" in mill black t own middle scho

23、ol tone e stablished、 franco-prussian do、 a nd judicial council gift youth legal rea ding more t han 1000 more t han thi s; 2021 televisi on ope ne d rule of law xx col umn、 total making broadcast 4 period、 16 arti cle rule of law new s program. and give full play to 193 of the county supported t he

24、 rule of law role of literary propaganda through popular a nd a cce ssible essay s、 allegro、 dancing a variety of theatri cal inter pretation of laws and regul ations promote the rule of la w 、 they performed as the coupl e mahjong and the conciliati on officers patrol i n mind、 coll ecti on and ot

25、her pr ogrammes are well receive d by the masses. check with 3 poi nts、 se lf-evaluati on-3 9. increase grass-roots mass cult ure of rule of law activities of the g uidance、 support、 and trai ning grass -roots cultural aware ness cult ural ba ckbone of rule of law 、 the county year-round t heatrical

26、 performance teams a total of 31 total support r ule of law、 mass culture of rule of law activitie s and healthy devel opment. evaluati on of 3 minutes、 scori ng 3 points 10. a cti ve use of the web site 、 television、 mobile phones a nd other new media lawpubl icity and educati on a ctivities carrie

27、 d out. in june 2021、 xx law popularization network officially opene d、 it's built and opene d、 xx is t he rule of law propaganda educati on impleme ntation of netw orked communi cation、 actively develop franco-prussian g overna nce a ccordi ng to law、 innovation i s a new initiative of the fran

28、co-german forms of gover nance a ccording to la w; departments of industry and commer ce、 taxation、 society set up the rule of law pr omotion portal sites; more t han 6、900 empl oyees from all walk s of life the cadre s and masses t hroug hout the county opene d a franco-german mobile ne ws-xx new s

29、. che ck with 3 poi nts、 se lf-asse ssment 3 poi nts 11. focus on combining rul e by law educati on a nd rule of law. in a ugust 2021、 my county is named after t he tow n of xx di strict village、 m eng first bor der village、 fengya ng community 45 village s communities in apr il 2021、 name d secreta

30、ry for commerce and industr y、 west side community as "rule of law to create demonstration unit". check wit h 3 points、 self -eval uation-3 four、精品学习资料精选学习资料 - - - 欢迎下载18219（ 2021.黄冈）已知实数x 满意 x+=3,就 x +的值为 精品学习资料精选学习资料 - - - 欢迎下载a20（ 2007.天水）如2 2a+1=0 求代数式的值精品学习资料精选学习资料 - - - 欢迎下载精品学习资料精选学

31、习资料 - - - 欢迎下载21（2021.佛山）阅读材料：把形如ax2+bx+c 的二次三项式（或其一部分）配成完全平方式的方法叫做配方法配精品学习资料精选学习资料 - - - 欢迎下载方法的基本形式为完全平方公式的逆写,即222a ±2ab+b =（ a±b） 精品学习资料精选学习资料 - - - 欢迎下载例如：（ x 1）2+3 .（x 2）2+2x .（x 2）222为 x+x2x+4 的三种不同形式的配方（即“余项 ”分别为常数项.精品学习资料精选学习资料 - - - 欢迎下载一次项.二次项见横线上的部分）请依据阅读材料解决以下问题：精品学习资料精选学习资料 -

32、- - 欢迎下载（ 1）比照上面的例子,写出x 24x+2 三种不同形式的配方；精品学习资料精选学习资料 - - - 欢迎下载（ 2）将 a2+ab+b2 配方（至少两种形式） ；精品学习资料精选学习资料 - - - 欢迎下载（ 3）已知222a +b +c ab3b 2c+4=0,求 a+b+c 的值精品学习资料精选学习资料 - - - 欢迎下载2222精品学习资料精选学习资料 - - - 欢迎下载22（ 2004.太原）已知实数a.b 满意（ a+b）=1,（ a b） =25,求 a +b +ab 的值精品学习资料精选学习资料 - - - 欢迎下载23（ 2001.宁夏）设a b= 2,

33、求的值2224已知（ x+y ） =49,（ x y） =1,求以下各式的值：+y（ 1） x 22；（ 2） xy25已知 x+=4,求 x 的值精品学习资料精选学习资料 - - - 欢迎下载26已知： x+y=3 , xy=2 ,求2x +y2 的值精品学习资料精选学习资料 - - - 欢迎下载227已知 a+b=3, ab=2,求2,（ a b） 2 的值精品学习资料精选学习资料 - - - 欢迎下载a +b的值2228如 x+y=2 ,且（ x+2）（ y+2 ） =5,求 x +xy+y29 x+的值2 11x+1=0 ,求 x230已,求以下各式的值：（ 1）；（ 2）精品学习资料

34、精选学习资料 - - - 欢迎下载warm franco-prussia n pea ce and harm ony and the new year greeting cards、 and the publi city photo gallery a nd the 2021 "law a nd usage、 law -abi ding" holler、 promoti onal material s such a s cale ndars、 market day、 festival "community law"、 "legal in rur

35、al" activities. mea nwhil e、 the county 9 tow nships tow ns legal office 85 villages、 4 community "two committees" cadre carried out against t he pe ople' s mediation law a nd sta ndardized legal docume nts、 the r ural land contracting la w and he rule of law training tour of the

36、m arriage act and other laws a nd regul ations. mea nwhile、 the party members of the party school teachi ng resource s and annually to t he village community the favorable opport unity for the county clerk traini ng 23、000 rur al "pave the way for the law" and the 1972 "legal advocacy

37、 center" legal publicity and education、 increase their use of legal means to ma nage r ural service s、 the a bility to pr event and deal with conflict s and disputes. assessment points 3 poi nts、 si nce a ssessment 3 points 13. incre ased on farmers worker s franco-prussian e ducation efforts、

38、regularly in-depth to farmers w orkers concentrated live to、 a nd w ork pla ces a nd the main activitie place s carrie d out reg ular of rule of law education; insisted "w ho compete ntwho franco-pr ussia n、 and w ho la bor w ho franco-prussia n" of work pri nci ples、 state-ow ned e nterpr

39、ise s、 labor units esta blished ha s farmers workers conti nues t o franco-prussian e ducation system、 regularly or not reg ularly organi zation carried out e ducation trai ning. franco-pr ussian union-relate d functions i n the county fairgrounds、 stati on di stribution ce nter for migrants、 legal

40、servi ce through the establi shme nt of enquiry points a nd propaga nda material s、 se nt out vans、 station ele ctroni c di splay rolli ng、 in stallation of car popularizati on anime and other forms of floating on t he rule of law publ icity and educati on a ctivities. positive retur n during the le

41、gal education of migrant workers、 improve migrant workers ' law conce pt and awareness of la bor rights a ccordi ng to law. for five years、 and floating population of migrant workers、 t he rule of law publicity and e ducation activities rea ched more tha n 600 times、 i ssue the labor contract la

42、 w 、 the census law 、 literatur e、 more tha n 10、000 copie s. assessment p oints 3 poi nts、 si nce asse ssment 3 poi nts three、 and to innovati on seeking development、 further dee pe ning rul e of law publi city education of way method、 solid adva nce "65" franco-prussian target task of completed assessment