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发表于:2021-07-29
问题详情:1.Quote…Unquote“Tostudyandnotthinkisawaste.Tothinkandnotstudyisdangerous.” ----Confucius,Chineseeducatorandthinker___________________________________________...
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发表于:2019-11-05
问题详情:先观察:1﹣=×,1﹣=×,1﹣=×,…(1)探究规律填空:1﹣=×;(2)计算:(1﹣)•(1﹣)•(1﹣)…(1﹣)【回答】【考点】有理数的混合运算.【分析】(1)利用平方差公式变形即可得到结果;(2)原式利用平方差公式化简,计算即可得到结果...
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发表于:2019-05-07
问题详情: (+1)(-1)-+()-1;【回答】解:原式=3-1-4+2=0.知识点:二次根式的乘除题型:计算题...
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发表于:2019-01-17
Iprefer"career,"withscarequotes,althoughonemightalsocallitapart-timejobwithopportunitiesforadvancement.Containsawordorphraseforwhichtheauthorornarratorindicatesadisclai...
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发表于:2020-03-22
问题详情:(﹣1)+(+1)+(﹣2)﹣(﹣3)﹣(+1).【回答】原式=﹣1﹣2+1+3﹣1=﹣.知识点:有理数的加减法题型:计算题...
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发表于:2020-09-06
问题详情:(22+1)(24+1)(28+1)(216+1)+1=.【回答】232.【考点】平方差公式.【专题】计算题.【分析】原式乘以(2﹣1)后,利用平方差公式依次计算,合并即可得到结果.【解答】解:原式=(2﹣1)(2+1)(22+1)(24+1)(28+1)(216+1)+1=(2...
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发表于:2018-01-29
ToquotefromclassicscanonsThisisaquotefromtheBible.Letmequotefromoneofyourdocuments.Ineedaquotefromeachofyouforthenewspaperarticle.There'sawonderfulquotefromJohnWatsonand...
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发表于:2019-02-28
问题详情:观察下列各式:(x﹣1)÷(x﹣1)=1(x2﹣1)÷(x﹣1)=x+1;(x3﹣1)÷(x﹣1)=x2+x+1(x4﹣1)÷(x﹣1)=x3+x2+x+1(1)根据上面各式的规律可得(xn+1﹣1)÷(x﹣1)= ;(2)求22019+22018+22017+……+2+1的值.【回答】解:(1)根据上面各式的规律,可得:(xn...
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发表于:2017-09-05
AsalesmanfromMotorolaorDelcomightstopby,withaquoteonresistors.WeregretbeingunabletoquoteonFOBbasis,asitisourgeneralpracticetodobusinesswithallourclientsonCIFterms....
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发表于:2018-12-06
Letmejustquotehim.Youmayquotemeonthat.That'sokay.Givethemaquote.TheyquoteTheDailyStar,whoquoteanunnamedScandinaviansourceapparentlyclosetoEriksen.Concludewithaquoteorcal...
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发表于:2023-12-27
1、Tocreateanactualapostrophe,puttwosinglequotemarksside-by-side(")toproduceonequotemarkinyouroutput."2、Sometimesallittakesisafresh,restedpairofeyestospotamissingsemi-...
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发表于:2021-08-15
问题详情:若(x-1)0=1则 ( ) A.x≥1 B.x≤1 C.x≠1 D.x≠0【回答】C知识点:分式的运算题型:选择题...
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发表于:2019-08-12
问题详情:.阅读材料,回答问题.(1+)×(1-)=×=1;(1+)×(1+)×(1-)×(1-)=×××=(×)×(×)=1×1=1.根据以上信息,计算:(1+)×(1+)×(1+)×…×(1+)×(1-)×(1-)×(1-)×…×(1-).【回答】解:(1+)×(1+)×(1+)×…×(1+)...
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发表于:2018-01-23
Tocreateanactualapostrophe,puttwosinglequotemarksside-by-side(")toproduceonequotemarkinyouroutput."Inordertoenterasinglequoteintoatextliteralsurroundedbysinglequotes,or...
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发表于:2021-12-13
Wehaveaskforquoteforrefitthebar.Wehaveaskedforquoteforrefittingthebar.Theirquoteforthejobwaswaytoohigh.Howmuchdoyouquoteforthisbrandoftie?Forexample,apricequotefor10,000T...
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发表于:2018-04-26
Sincereprintrateindicatesthefameandthenumberofreadersofthescientificpapersprintedintheperiodicalsandquoterateindicatestheacademicinfluenceofthem.InsuranceBrokerswillquote...
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发表于:2020-01-18
问题详情:计算:(1﹣)×(1﹣)×(1﹣)×(1﹣)×…×(1﹣)×(1﹣)【回答】解:原式=××××…××=.知识点:有理数的乘除法题型:解答题...
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发表于:2019-07-13
问题详情:如图表示果蝇(2N=8)体内细胞在*过程中某比值H(H=染*体数/核DNA含量)QUOTE的变化曲线,F时细胞*刚好结束.下列相关叙述中错误的是()A.EF段细胞内可能有8对同源染*体B.基因的分离和自由组合...
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发表于:2020-04-01
问题详情:.计算(﹣1)1+(﹣1)2+…+(﹣1)2000=. ...
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发表于:2018-11-16
ExceptasauthorizedbytheCompany,theDistributorshallnotquotepricetoanycustomersoutsidetheterritory.Wewanttobuyamanganeseoxidewith62%PLSsendusyourspecandyourquotepriceFOB.Wh...
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发表于:2020-11-23
问题详情:计算:(1-)(1-)(1-)……(1-)(1-).【回答】原式=(1-)(1+)(1-)(1+)(1-)(1+)……(1-)(1+)(1-)(1+)=×××……××=×=.知识点:乘法公式题型:计算题...
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发表于:2020-09-06
问题详情: (x-1)-(1-x)+(x+1)=3x-1.()【回答】∨知识点:整式的加减题型:填空题...
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发表于:2019-04-15
问题详情:观察下列各式(x-1)(x+1)=x2-1(x-1)(x2+x+1)=x3-1(x-1)(x3+x2+x+1)=x4-1…①根据以上规律,则(x-1)(x6+x5+x4+x3+x2+x+1)=______.②你能否由此归纳出一般*规律:(x-1)(xn+xn-1+…+x+1)=______.③根据②求...
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发表于:2020-10-01
问题详情:计算: +()﹣1﹣(+1)(﹣1)【回答】【考点】二次根式的混合运算;负整数指数幂.【专题】计算题.【分析】原式第一项化为最简二次根式,第二项利用负指数公式化简,第三项利用平方差公式化简,合并后即...
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发表于:2019-08-24
问题详情:根据(x﹣1)(x+1)=x2﹣1,(x﹣1)(x2+x+1)=x3﹣1,(x﹣1)(x3+x2+x+1)=x4﹣1,…的规律,则可以得出22017+22016+22015+…+23+22+2+1的结果可以表示为 .【回答】22018﹣1.【解答】解:22017+22016+22015+…+23+22+2+1...