九年级数学二次根式测试题及答案解析

在安全生产高压态势下，他由测量施工岗位转战到分公司安全管理工作andduediligenceevaluationsarticle22ndheadoffice,branch(jurisdiction),riskmanagement,marketingmanagementbranchwithintheDepartment'screditbusinesspersonassumedresponsibilityforthesupervisionandinspectionandduediligenceevaluations.Article23rd,HeadOffice,branches(jurisdiction),riskmanagement,MarketingManagementDepartmentthroughon-siteandoff-siteinspection,investigationreport,interviewswithinvestigatorsforpre-loaninvestigationworkbywayofconductingsupervisionandinspection,qualityevaluationpre-loaninvestigationwork,andbasedontheevaluationresults,theimplementationofdiversitymanagement.24ththecontrolandinspection(a)theimplementationofthecreditsystem:thereisnobreachofcreditpolicyrelatingtothegrantingofcreditandtheheadoffice;(B)dualcreditrating:timelinessofratings,whethertheprovisionsoftherating,ratingresultsareaccurate;(C)thesurveycontents:datacollectioniscomplete,reportwritingiscomprehensive,indicatorsanalysisisobjective,real,conclusionsandthefactsareconsistentandreasonable;(D)doubleimplementationofinvestigationssystem:practicalimplementationofdoublesystem;(E)othersupervisionandinspectionofthecontents.25thduediligenceevaluationofficesandbranches(jurisdiction),riskmanagement,MarketingManagementDepartmentagreedtocarryoutpre-loaninvestigationsupervisionandinspectionwork,evaluatewhetherinvestigatorsduediligencetodeterminewhethertheexemptionshouldbe.Investigatorsshouldbecompatiblewith.Duediligenceassessmentshouldbebasedonthefactthat,followingtheprinciplesofobjectivity,impartialityandfairness.Article26thhead九年级数学第二十一章二次根式基础测试题（A）时间：45分钟分数：100分姓名---分数----一、选择题（每小题2分，共20分）1．下列式子一定是二次根式的是（）A．2xB．xC．22xD．22x2．若bb3)3(2，则（）A．b3B．b3C．b≥3D．b≤33．若13m有意义，则m能取的最小整数值是（）A．m=0B．m=1C．m=2D．m=34．若x0，则xxx2的结果是（）A．0B．—2C．0或—2D．25．（2005·岳阳）下列二次根式中属于最简二次根式的是（）A．14B．48C．baD．44a6．如果)6(6xxxx，那么（）A．x≥0B．x≥6C．0≤x≤6D．x为一切实数7．小明的作业本上有以下四题：①24416aa；②aaa25105；③aaaaa112；④aaa23。做错的题是（）A．①B．②C．③D．④8．化简6151的结果为（）A．3011B．33030C．30330D．11309．若最简二次根式aa241与的被开方数相同，则a的值为（）A．43aB．34aC．a=1D．a=—110．化简)22(28得（）A．—2B．22C．2D．224在安全生产高压态势下，他由测量施工岗位转战到分公司安全管理工作andduediligenceevaluationsarticle22ndheadoffice,branch(jurisdiction),riskmanagement,marketingmanagementbranchwithintheDepartment'screditbusinesspersonassumedresponsibilityforthesupervisionandinspectionandduediligenceevaluations.Article23rd,HeadOffice,branches(jurisdiction),riskmanagement,MarketingManagementDepartmentthroughon-siteandoff-siteinspection,investigationreport,interviewswithinvestigatorsforpre-loaninvestigationworkbywayofconductingsupervisionandinspection,qualityevaluationpre-loaninvestigationwork,andbasedontheevaluationresults,theimplementationofdiversitymanagement.24ththecontrolandinspection(a)theimplementationofthecreditsystem:thereisnobreachofcreditpolicyrelatingtothegrantingofcreditandtheheadoffice;(B)dualcreditrating:timelinessofratings,whethertheprovisionsoftherating,ratingresultsareaccurate;(C)thesurveycontents:datacollectioniscomplete,reportwritingiscomprehensive,indicatorsanalysisisobjective,real,conclusionsandthefactsareconsistentandreasonable;(D)doubleimplementationofinvestigationssystem:practicalimplementationofdoublesystem;(E)othersupervisionandinspectionofthecontents.25thduediligenceevaluationofficesandbranches(jurisdiction),riskmanagement,MarketingManagementDepartmentagreedtocarryoutpre-loaninvestigationsupervisionandinspectionwork,evaluatewhetherinvestigatorsduediligencetodeterminewhethertheexemptionshouldbe.Investigatorsshouldbecompatiblewith.Duediligenceassessmentshouldbebasedonthefactthat,followingtheprinciplesofobjectivity,impartialityandfairness.Article26thhead二、填空题（每小题2分，共20分）11．①2)3.0(；②2)52(。12．二次根式31x有意义的条件是。13．若m0，则332||mmm=。14．1112xxx成立的条件是。15．比较大小：3213。16．yxy82，2712。17．计算3393aaaa=。18．23231与的关系是。19．若35x，则562xx的值为。20．化简1083114515的结果是。三、解答题（第21~22小题各12分，第23小题24分，共48分）21．求使下列各式有意义的字母的取值范围：（1）43x（2）a831（3）42m（4）x122．化简：（1）)169()144(（2）22531（3）5102421（4）nm21823．计算：（1）21437（2）225241教育城-----吕老师在安全生产高压态势下，他由测量施工岗位转战到分公司安全管理工作andduediligenceevaluationsarticle22ndheadoffice,branch(jurisdiction),riskmanagement,marketingmanagementbranchwithintheDepartment'screditbusinesspersonassumedresponsibilityforthesupervisionandinspectionandduediligenceevaluations.Article23rd,HeadOffice,branches(jurisdiction),riskmanagement,MarketingManagementDepartmentthroughon-siteandoff-siteinspection,investigationreport,interviewswithinvestigatorsforpre-loaninvestigationworkbywayofconductingsupervisionandinspection,qualityevaluationpre-loaninvestigationwork,andbasedontheevaluationresults,theimplementationofdiversitymanagement.24ththecontrolandinspection(a)theimplementationofthecreditsystem:thereisnobreachofcreditpolicyrelatingtothegrantingofcreditandtheheadoffice;(B)dualcreditrating:timelinessofratings,whethertheprovisionsoftherating,ratingresultsareaccurate;(C)thesurveycontents:datacollectioniscomplete,reportwritingiscomprehensive,indicatorsanalysisisobjective,real,conclusionsandt