【鼓楼区】2017-2018学年第二学期初二数学期末试卷及解析资料下载.pdf
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【鼓楼区】2017-2018学年第二学期初二数学期末试卷及解析资料下载.pdf
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6212112xxA2xB2xC2xD2x2A18B6C13D123A2=4xB10xxC210xxD210xx412127ABCD465452A1B2C3D46500“”308“”0616“”0618“”06181000“”0620ABCD1274xx8186391kyx2ykxk1k20ABA23B10x1x2230xx1212xxxx=1144400121234“3”P3“4”P4P3P4“”“=”“”12131413ABCACB=90DEFACABBCCE=3DF=14kyxAkyxAxyBDxADBCABCD2k15x20axbabx1=m+1224xmba1620kykxAay1Ba+1y2y2y1a10681712111233322231515324142xx18812410xx22411xxx194214111aaa3a205ABCDACBDOBEACCEDBOBEC20215211_2B_385%C225ABCDPBC1ADH2BDEFBF=DF2223512211.2246(52)(52)=1(0)aaaa
(1)
(1)=1(0)bbbb552121233523351233211233232018201720172016259ABCDABACAB2AC4ACBDOACOBCADEF1_ABEF2ABCDEF4_25269AAxAyCCxCyMACAMPCMQPM=MQPA=QCMACMxxxxAMMCyyyy=22ACMACMxxxyyyM2ACxx2ACyy1ACA13C31ACM2ABCDABC152233D3A8yx0xAABxACy2yx0xBCDy=2xAABCDA6212123456ABDCDB102207891011x42(23)2121314151632410a1022017121=23332=2342=2152315151=22452=26543=42
(2)
(2)
(2)
(2)xxxxx=2
(2)
(2)xxx=12x41881x24x+1=0a=1b=4c=1b24ac=(4)2411=120x=4124232322x1=2+3x2=23424(x1)2x(x1)=0(x1)4(x1)x=02(x1)(3x4)=0x1=03x4=03x1=1x2=434194111()11
(2)
(2)aaaaaa211
(2)
(2)aaaaa=12a3a=3=14205BEOCCEOBOBEC2ABCDOC=OBACBD3BOC=90OBEC4OC=OBOBEC5215141236233485%0.80.30.90.7=0.74C0.75225B235x(x+1.2)1221+1.2xx2x=1.63x=1.647.55246123912=2+3+3+22=2+2+23331201820172018201712017201620172016420182017201720161120182017201720165201820172017201662591a=9012459033ABACAB=2AC=4BC=25ADBCh=4555EF=ACAECFAECF4AF=8556AECF=AFh=855455=3257EF=BDBEDFBEDF42DF=12558BEDF=DFh=12554548559261ACA(13)C(31)22ACMACMxxxyyy11MMxyACMM(11)12ACBDMABCDMACBDA(15)C(33)22ACMACMxxxyyy14MMxyMM(14)2DD(,)22BDMBDMxxxyyy46DDxyDD(46)33A(a8a)B(4a8a)C(a2a)4ABABCDABCDxxxxyyyy4882DDaaaxyaaa414DDaxyaD(4a14a)y=2xA1(27477)5ACACBCACBDxxxxyyyy4828DDaaaxyaaa742DDxaya=D(74a2a)y=2xA2(27747)5ADADCBADCBxxxxyyyy4828DDaaaxyaaa42DDaxya=D(4a2a)y=2xA3(24)8AA1(27477)A2(27747)A3(24)9
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