江苏省泰州市兴化市2022年中考数学最后冲刺浓缩精华卷含解析及点睛

《江苏省泰州市兴化市2022年中考数学最后冲刺浓缩精华卷含解析及点睛》由会员上传分享，免费在线阅读，更多相关内容在教育资源-天天文库。

2021-2022ὃᦪᔁὃ1.ᵨ2B⌱⚪ᫀᙠ⚪ᵨ0.5!"#$⁐&'Ḅ)ᡈ+&,-⚪Ḅᫀᑏᙠ⚪Ḅ⚪/ᑁ஺ᑏᙠ⚪ᔁஹ₝4ᙳ6ᦔ஺2.⚪89:▅<⚪Ḅ=>⚗@ᢥBC⚪஺Dஹ⌱⚪EFᜧ⚪ᐳ12IJ⚪KJ⚪4ᑖᐳ48ᑖ.ᙠKJ⚪NOḄPI⌱⚗QᨵD⚗STᔠ⚪V⌕XḄ.Y1.DZ[\]Dᙽ[_`_a᝞cd᝞eNl=58஺fgN2ḄhᦪiE.A.32°B.58°C.138°D.148°2.klmn⍝ᡃqᨬsẆᑴḄ“wᡭDm”6z{Ḅ|h᩽~ᨬ|h204000!/ᑖIᦪᵨᦪ⊤ḄSEYA.204x1B.20.4xl04C.2.04xl05D.2.04xl063.᝞cᙠABCZC=90°,ZB=10°,#AiᙊiᑖABஹACMN,ᑖ#MஹNiᙊᜧMNḄiP,AP¡BCD,ᑣ£ᑡ¥ḄIᦪSজADSNBACḄ¦ᑖ§¨ঝNADC=60஺¨ঞDᙠABḄᚖ§¨টSADAC:SABC=11.AA.1B.2C.1D.44.᝞cS¬Dᱥmm®Ḅ¯°±²D180mLḄ³´µDI¶¬i300mLḄ·¸¨±²¹`IºḄ»ᴻᳫdᐭ³e³¿ᨵÀ¨±²`DIº᪵Ḅ»ᴻᳫdᐭ³e³ÀÂO.±²±²¹±²`

1᪷k#¯°ÄDI»ᴻᳫḄm®ᙠ£ᑡÅDÇᑁÈlmL=lcm3
.A.10cm3#20cm3#£B.20cm3#30cm3#£C.30cm3#40cm3#£D.40cmব#50cm3#£5.᝞cÉÊËᱥ§%=-x?+4x[§y?=2x.ᡃÍÎCÏxÐDÑÒxÓḄÔᦪÑᑖiy௃ஹy2,Öy#y2,Ðyiஹy2Ḅ×JÑiMÖyi=y2,Ø=ÚÛÚ2.£ᑡᑨÝজÏx>2ÒM=y2ঝÏxVOÒxÑàᜧMÑàᜧ¨ঞáâMᜧ4ḄxÑãäᙠ¨টÖM=2,ᑣx='T.ᐸḄᨵ7.ᐵxḄç°3x+2a=x-5ḄèSéᦪᑣaḄÐÑÇSEYAr1rip'8.᝞cᙠ஺êᑖᙠëAB,ACëÉÊì=,ᑣᓃḄÑiEY9.᝞cᡠ,ᙠᢚñòJóᑴôõDöABCᱏD,EᑖᙠëAB,ACABCøḼDEᢚúû¦,A]AüᔠÖNA=70஺,ᑣNl+N2=

2A.70°B.110°C.130°D.140°10.᝞eýᦪþÿᨵᑣᦪXḄXA.x>-3B.xROC.xN-3xWOD.x>311.᝞ABy=4x+2ḄᑖAyḄBḄᙶ᪗6,!BC"!y=-xḄᑖCḄ#ᙶ᪗6,ᵫC%&'()*“A-B-C”Ḅ+,-ᡂ/01.P
2017,mQ
2020,nᙳᙠ5016ᑖ7+PஹQ9ᔣx;ᚖᚖ=D>E,ᑣ?@-PDEQḄ☢BC12.ᐗEFG,4x2-2x+1=0Ḅ᪷ḄIJ4A.ᨵ9K'LMḄᦪ᪷B.ᨵ9KLMḄᦪ᪷C.Nᨵᦪ᪷D.OPᑨ(EஹRS⚪UVᜧ⚪ᐳ6KY⚪ZY⚪4ᑖᐳ24ᑖ.C13.ᙠ[-ABCD\AB=4,BC=9,EAD@6]^@AB_BEᢚaAḄbcAdAᑮ[-fg9b@Ḅhijk13,ᑣAEḄg.14.ᓄmE-⁐ḄpqMr.a-2a-415.᝞ᙠs☢tᙶ᪗u\vᱥy=-x2+4xxrA,Mx6Gvᱥ6+M;MP±xrP,xMPbt;[-MNPQ,ypNQ,ᑣbtNQḄᨬᜧ.16.᝞{|Iy=V3x,+
2,0;xḄᚖ1rN,+N;IḄᚖxrM“

3+Mi;xḄᚖ1rN”+Ni;1ḄᚖxrM2,……ᢥ~PᑣM2000Ḅᙶ᪗17.ᐵrXḄᐗEFG,x2+஻x+c=0Ḅ9᪷X1=1,2=2,ᑣX2+3X+CᑖḄpq18.ᑖUx2-3x+
x-3=.ஹ⚪UVᜧ⚪ᐳ9KY⚪ᐳ78ᑖcᑏᦻஹ+,ᡈ.19.
6ᑖCᙠ᝞ḄG-\ZKYG-Ḅ@g1t-ABC⚔Ḅt-CḄ⚔AஹCḄᙶ᪗ᑖ74,6ஹ
-1,4ᙠ\Ḅs☢ᑁs☢tᙶ᪗uAABCᐵrxb¡Ḅ45C1ᙠy6¢;P,£AP8CḄᕜgᨬY¥¦ᑏ§Ḅᙶ᪗.2஺.6ᑖCᔺª«¬᪷¬®¯ᦪḄ°±'bK³¯ᦪḄ´>ឋ¶·¸¹᝞º»'¼½¾º»+,⊡ᐙÁ᦮5¯ᦪḄÃÄÅxḄ.ᑡ⊤UX-2-10123456._5y•-17m-1~2-5n-1~2-17.⊤\m=,n=.Èஹyᙠ☢Ḅ\〉ÊḄs☢tᙶ᪗uxOy\È6⊤\ᔜbbcᙶ᪗Ḅᐸ\x#ᙶ᪗yᙶ᪗C¥᪷ÈḄ5¯ᦪḄ´U

4ÍÎᡠḄ¯ᦪ´ᑏ5¯ᦪḄ9ᩩឋ¶:জ;ঝ.21.6ᑖC᝞NMONḄ@OW6ᨵ94ஹ8ᙠNMONḄᑁ¢;P,£Ô§ᑮNMONḄ9@ḄhiLMḄᕜgᨬY.Õᶇ;×Ø'ᑏ;PC22.8ᑖC¹ÙÚ“ÜÝÞᦔ”áâãäåæç600è¬éZᜩḄÃ묮IJì᪥¬éîïðñò¹åæçḄᑖ¬é¥óò½ôZᜩÃ묮Ḅõö.᪷óòpqᑴ;¹9ø'Á᦮Ḅùú1,2,᪷ùú\Ḅûüýᑡþ⚪U1VFóòḄ¬éÿᦪ
22a
1ᩩ⊡ᐙ᦮3᪥!"#$1.5%ᨵ4ὁ()*ᦔ,-.Ḅ4012ᑖ456AஹBஹCஹD,ᐸA6%9:;<⌱>?0@ABCDE,ᵨᑡ⊤Jᡈ᪛MḄNJOP⌱%94Ḅᭆ᳛.

523.(8ᑖ)UVWXYᦪy=x+lZ[ᱥ]DA,9),B(0,1)?^^Cᙠ[ᱥ]`abᙶ᪗61.(/n(1)ᑏP[ᱥ]ḄYᦪ⊤fg;(2)ᑨjAA5CḄMklmḄno;(3)p☢ᑁ
ᔲtᙠ^஺ᙠv]ASஹBCஹACwxyz᝞,tᙠv|ᑏPᡠᨵ~ᔠᩩḄ஺Ḅᙶ᪗᝞,"2x—4x—2,ᯠᙠ"zgXV2Ḅ᦮ᦪ⌱>W〉ḄᦪᐭO.—1x~—2x+125.(10ᑖ)ᔠZ——ᢚḄᦪᙠᱯḄpA%┐Ḅᢚ⚪@AẆ.⚪¡¢:ᙠABCD^EஹFᑖ4
BCஹAD`Ḅ¤^aBE=DF,¥|EF,ABCD¦EFᢚ^C§ᙠ^Cᜐ^D§ᙠ^Dᜐ©]ECZ©]DAyD$^M.ª)Zkl:(1)᝞1,ECZ]«ADD$^Mᑨj¬MEFḄMklmḄno;®Z¯:(2)^MZ^A°ᔠᙠ2®P±Ḅᢚ²EF³ᢚḄ(⌕O¶·¸®"ᑏ®J¹ᶇ®²»᪗¼y½Ḅ¾¿);®ZÀ:(3)᝞3,^Mᙠ]«DAÁÂ]`]«ᑖ4ZAD,ABD$P,N?^CEZABD$^Q,¥|MNÁÂMNDEF$^O.Ok¶MOJ_EFaMOpᑖEF(4)ÃAB=4,AD=4Äᙠ^Eᵫ^BƤᑮ^CḄÈÉ^DᡠBÈḄÊËḄÂ6

626.
12ᑖ:⚪ÌPপ.᝞1,ᙠABCDAB=BC,AD=CD=3,ZBAD=ZBCD=90°,ZADC=60°,ÎÏIABCDḄ☢Ð6⚪À
2Ñ2,ᙠABCDZBAD=ZBCD=90°,ZABC=135°,AB=22,BC=3,ᙠADஹCD`ᑖ4ÒW^EஹF,ÓÔABEFḄᕜÂᨬ%®P×ᓽÙ.27.
12ᑖ:᪥ÚÛ9km᜜ḄÝÞßàWáᑖâAãᐜåæ%ᐸçèéᐳëãPì,n,çí1ᑮf.îVéᐳëãḄï
AãïḄ3ðOAãḄï³éᐳëãḄïᑖ4
ñ#òóὃõᫀWஹ⌱>⚪2÷ᜧ⚪ᐳ12%⚪ù%⚪4ᑖᐳ48ᑖ.ᙠù%⚪úPḄ⌱⚗üᨵW⚗
~ᔠ⚪ý⌕OḄ.:1ஹDூ᪆௃᪷ÿ
Ḅ᜜
Ḅᑁ
ḄNL᪷
N2=N1.ூ௃᝞ᵫ
Ḅ᜜
ឋ#$Zl=90°+Z1=90°+58°=148°.

7•.•Ḅ/2=/1=148஺.ᦑ⌱D.ூ௃⚪ὃḄឋḄ᜜!"ḄᑁḄ$Ḅឋ%&ឋ'(⚪Ḅᐵ*.2ஹCூ᪆௃.⚪ᑖ᪆02040001/ᑖ3ᦪᵨ67&ᦪ8⊤:2.04x105,ᦑ⌱c.ὃ;067&ᦪ8⊤:<ᜧḄᦪ.3ஹDூ᪆௃জ᪷@ABḄCDEFAD'NBACḄᑖ.ᦑজGH.ঝ᝞B\•ᙠAABCM,ZC=90°,ZB=10°,/.ZCAB=60°.OAD'NBACḄᑖ.*.Zl=Z2=ZCAB=10°,PZl=900-Z2=60°,ᓽNADC=60°.ᦑঝGH.AঞNl=NB=10஺.AD=BD....;DᙠABḄMᚖT.ᦑঞGH.ট0᝞BᙠAACDMZ2=10°,.,,CD=-AD.21311:.BC=CD+BD=-AD+AD=-AD,SADAC=-AC»CD=-AC»AD.2224.1133••SAABC=-AC*BC=—AOA—D=—ACeAD.2224/•SADAC0ABC=(WAC,ADWACA©0.ᦑটGH.XTᡠZGHḄ[\'0জঝঞট,ᐳᨵ4.ᦑ⌱D.4ஹC

8ூ᪆௃ᑖ᪆0⚪E_`ᴻᳫḄcdeX,g᪷@⚪hᑡj!klmn(onjpᫀᓽE.[3x<300-180r(0_`ᴻᳫḄcdeX,ᑣᨵ4>300780V(n302y2>yi50VxV2yi>y2§xVOy2>yt..,•জ┯«.•••x<0-%=-x2+4xy=2xḄ®xḄ¯ᜧ°¯ᜧ2.,.xVOx±ᜧM±ᜧ..•.ঝGH.,.•³ᱥyl=-x2+4x=-µx-2¶2+4Ḅᨬᜧe4,.^.Mᜧ4Ḅx!¹ᙠ..•.ঞGH§:•0VxV2yi>yz,M=22x=2,x=l§•.•x>2y2>yi,...M=2_x?+4x=2,(nx1=2+JiX=2-V2µ¾¿¶.2PÀnM=2Ḅx'1ᡈ2+a..*.ট┯«.XTᡠZGHḄᨵঝঞ2.ᦑ⌱B.6ஹBூ᪆௃ÄᳮᦪÆ'Ä▲!ÈÉÊᦪ.ᳮ(ÄᳮᦪḄᭆÌÍ⌕Îᳮ(ᨵᳮᦪḄᭆÌᨵᳮᦪ'᦮ᦪᑖᦪḄÐÑ.ᓽᨵ▲Êᦪ$Ä▲ÈÉÊᦪ'ᨵᳮᦪ°Ä▲!ÈÉÊᦪ'Äᳮᦪ.ᵫᓽEᑨÍ⌱Ó⚗.ூ௃22AஹÖ'ᑖᦪ×ᨵᳮᦪ§BஹK'Äᳮᦪ§Cஹ79=3,'᦮ᦪ×ᨵᳮᦪ§Dஹ-g'ᑖᦪ×ᨵᳮᦪ§ᦑ⌱B.

9ூ;௃⚪Ý⌕ὃÄᳮᦪḄÍÞᐸMàMᑁ7áḄÄᳮᦪᨵ0ᐔ2n§ãäã!åḄᦪ§æç0.1010010001…,ᨵ3᪵éêḄᦪ.7ஹDூ(᪆௃ᐜ(äDmjx,g᪷@('ìᦪnᑮᐵaḄ!k(!kᓽEn.ூr(௃(äD3x+2a=x-5n-5-2ax=-----------,2îeäDḄ(eìᦪ„,52aᡠ-------<0,2(n0a>--.2ூ;௃⚪ὃᐗäDḄ(æᐗ!kḄ(8(ᐗ!k⌕ðhḄ'0ñᙠ!kòóÎôᡈ◀Îìᦪ!öäᔣ⌕ᦋù.8ஹBூ(᪆௃᪷@DE//BCnᑮAADE^AABC,᪷@úḄឋ(p.ூr(௃
AD1(0----=—»DB3••A•D=--19AB4VDE/7BC,/.ADE^AABC,41)CE-一--A4ᦑ⌱0B.ூ;௃⚪ὃúḄᑨÍ$ឋÿ
ḄḄ
⚪Ḅᐵ.9ஹDூ᪆௃

10••&'ADAEḄᑁ
((4-2)•180°=360°,)ᵫᢚ+,NAED=NAED,NADE=NA'DE,ZA=ZA',.,.ZAED+ZA'ED+ZADE+ZA'DE=360°-ZA-ZA'=360°-2x70°=220°,/.Zl+Z2=180°x2-(ZAED+ZA'ED+ZADE+ZA'DE)=140°.10ஹcூ/᪆௃᪷23᪷4ᨵ67ᑖ4ᨵ67Ḅᩩ:ᑡ4/4ᓽ.ூ>/௃ᵫ⚪6x+3>0,X#),/x>-3@x#0,ᦑ⌱C.ூCD௃E⚪ὃGᑖ4ᨵ67ᩩ:23᪷4ᨵ67Ḅᩩ:HIJKᐵ,MN/⚪ḄᐵO.11ஹCூ/᪆௃A,CPQḄRS(6,CQCPḄTRS(3,U)ᑮA,BPQḄTRS(1,@k=6,᪷&'PDEQḄ☢X((6+L5)X3=Zᓽᑮ&'PDEQḄ☢X.24ூ>/௃A,CPQḄRS(6,2017-6=336...1,ᦑCPSx[ḄRSCBSx[ḄRSᙠy=4x+2]^y=6_x=l,ᓽCPSx[ḄRS(6,:.m=6,2020-2017=3,ᦑCQCPḄTRS(3,,6ᓝ/k=6,aby=9,X1+3=4,y=(=|,ᓽCQSx[ḄRS(g,.„_3••n=,2

11•!"PDEQḄ☢$d6+L5iX3=45.24ᦑ⌱'C.ூ()௃ὃ+,-./ᦪḄ123ឋ5678"Ḅ☢$69ᔠឋ;<6=>;ᜧ.12ஹBூ᪆௃@⚪᪆'ᙠBC4x2-2x+=0D6A=-22-4x4x—=0,4EᐗGHBC4x2-2x+-=0ᨵJK
ḄLᦪ᪷.4ᦑ⌱B.ὃ('᪷ḄᑨOP.GஹQR⚪'STᜧ⚪ᐳ6KV⚪6WV⚪4ᑖ6ᐳ24ᑖ.Y13ஹᡈ15ூ᪆௃ppA'PA'p\A'r1ᵫNBA'G=ZA'EF,ZBG4'=ZEFA'6[AE4T\AA'BG,ᡠ^_=——.b^জdE=Eeঝ஽=hJijA'GBGA'G3AF3kᑖlmnᓽp[qrᫀ.ூ௃tuvᢚ6ᡠ^A3=A5=4,ZBA'E=90°,xA'yA'F6AD,zADF,zBCG᪷{⚪|6BC//AD,.A'F1BC.}A'(ᙠ~ABCDḄᑁ6᝞1

12!JGF=AB=4,ᵫNEA'B=900pNEA'F+ZBA'G=90°.NEA'F+/A'EF=90°..-.ZBA'G=ZAEF.NBGA'=NEFA'.•••AE4,F-M,BG.•••AEA'F-M'BG..R_A'FᙠAN1}—;-=EA'G3ᑣA'G=3,AF=1.BG=JA®-AG?="2-32=V7.1.AE=AF-EF=BG-EF=E—^-=^-.77A'G1A'F3ᑣAG=1,A'=3.BG=JAE-AG="272=.EF=—.5AE=AF-EF=BG-EF=sJi5--=^^-.55ᦑrᫀ᝕ᡈ.75ூ()௃

13E⚪l⌕ὃGnoᢚp⚪q
ᑨsᮣuvᵨNᐵO┯yᑖ᪆$z⚪ᜫᑖ|yᨵ3C$1}ᮣuvᵨ~ᢚ+Cp⚪+Ḅឋ#2ᨵᑖᵫCAAᑮ~'ḄRSP(1:3,◤⌕ᑖAM:AN=1:3,AM:AN=1:3AM:AN=3LAM:AN=3:13}᪷q
'ᡂ
Ḅ'.ூ᪆௃ᐜᑖ(ᑖᑖ4ᯠ᪷ᑖ4Ḅᑣᓽ.ூ௃a+22a/$|4="T~~——~——d஺+2
஺-2d஺+2
஺—22—q
a+2

2-2_-a-2
a+2
a-21a+2ᦑᫀ($2.ூ௃¡⚪ὃGḄNᑖ4ḄJKᑖ4ḄᑣN/¢¡⚪ḄᐵO.15ஹ4ூ᪆௃•••&'MNPQN~.♦.NQ=MP,.•.^MPᨬᜧ_NQ¥ᨬᜧ.•.•CMN¦ᱥy=-x2+4xᙠX[¨©ªᑖ«¨ḄC@MPJ.X[CP,••^CMN¦ᱥḄ⚔C_MPḄᨬᜧ.Vy=-x2+4x=d®2>+4,•••¦ᱥy=-®2+4xḄ⚔Cᙶ᪗(2,4,2^CMḄᙶ᪗(2,4_MPᨬᜧ=4,2
NQḄᨬᜧ(4.

1416ஹ(24001,0)ூ᪆௃ᑖ᪆'᪷{/Ḅ᪆PqNMON=60°,[ᑮ/%஺=/஺ᵨ|7=30஺,᪷{30஺ᡠḄ¦ḄE§q=22.OM,ᯠ©⊤«q஺ᵨ஻3OMḄᐵ6b᪷{(M.ᙠx¯h6ᓽpq(“200஺Ḅᙶ᪗³'•.•/'y=Gx,:.NMQV=60°,'NM±x¯I,.NMNO=NO◍N=90°—60°=30°,AON=2OM,OM=2ON=40M=22•OM,y¼ᳮ,0^2=2?஺À=(22)2஺"6•••9OM=(22)2.OM=22.=22,,+1,n2ᡠ^6(M”Ḅᙶ᪗uQ2"T,0).(M2000Ḅᙶ᪗u(24°Ä0).ᦑrᫀu'(2ÅÄ0).()'ὃ+,EH/ᦪ12h(Ḅᙶ᪗ᱯÇ6᪷{(Ḅᙶ᪗ÈḄÉ>6^Ê᝞Ë᪷{ÈḄÉ>q(Ḅᙶ᪗6Ì|ᔜ
ᐵÎḄ9ᔠᵨ.17ஹ(x-l)(x-2)ூ᪆௃᪷{BCḄJ᪷6p^ÐBCᓄu'a(x-X!)(x-x)=0(Ó0)ḄP6ÔBCᓽp[ᑮᡠÕᦪPḄtP2ᑖḄÖ×.ூ³௃'ØBCḄJ᪷u'x,=l,X2=2,p['(x-1)(x-2)=0,.,.x2+bx+c=(x-1)(x-2),ᦑrᫀu'(x-1)(x-2).ூ()௃EᐗGHBCax2+஻x+c=o(Ó0,aஹbஹcÛᦪ)6}BCḄJ᪷xieᑣaF+6x+c=a(x-xi)(x-X2)

1518ஹ(x-3)(x+l)ூ/᪆௃᪷y4ᑖ/Ḅᭆ²³´ᐜµ|4ᓄ·ᯠᵨᓝ¸¹ᑖ/ᓽ|4=X2-3X+X-3=x2-2x-3=(x-3)(x+1)ᡈᐜµ»⚗½¾y4ᯠµx-3¿À᦮½¾y4$|4=x(x-3)+(x-3)=(x-3)(x+1).ᦑᫀ((x-3)(x+1).CD$¡⚪l⌕ὃGny4ᑖ/ᐵONÃÄy4ᑖ/NµÅ⚗4ᓄ(Æy4XḄ4.ᑭᵨy4ᑖ/Ḅȳ´$½(¾y4)ஹ2ᝅ(©Ì¾4/Î2=Ï+(°Ñᐰ©¾4/±2Ó+஺2=(஺±32)ஹÕG(Ö×ᑖ/)Uᑖ/y4ᓽ.ஹ/⚪$(Eᜧ⚪ᐳ9Ù⚪ᐳ78ᑖ/ᑏᦻ¸ÜÃஹÝÃÞßᡈà³´.19ஹ(1)(2)á/᪆(3)P(0,2).ூ/᪆௃ᑖ᪆$(1)᪷A,CCḄᙶ᪗ᓽâã☢
ᙶ᪗ä.(2)ᑖåæᔜCᐵx[ḄèCé3êëᓽ.(3)æCCᐵy[ḄèCêëBiCìy[CP,ᓽ(ᡠ.>/$(1)(2)᝞ᡠî$(3)æCCᐵy[ḄèCêëBiCìy[CP,ᑣCPᓽ(ᡠ.ïBiCḄ/᪆4(y=kx+b(k#0),VBi(-2,-2),C(1,4),—2k+஺=—2k=2/:k+b=4'b=2ABzḄ/᪆4($y=2x+2,ñ^x=0_,y=2,.\P(0,2).

16CD$E⚪l⌕ὃG[èḄòᑴ[èḄᵨ.20ஹ(1)ᑗõᦪ(2)--(3)á/᪆(4)÷øᦪᨵᨬÙᨵᨬᜧ÷øᦪ«ᐵx=2è22ூ᪆௃(1)ᑖ4Ḅᑖù(2)µúûḄüᐭᓽ/(3)᪷⚪6þCஹêᓽ(4)ÿ
ᓽᦪḄᐸឋ.ூ௃(1)ᵫ=--~x2-4x+5ᡠxḄ!ᑗ#ᦪ.ᦑ%ᫀ'(!ᑗ#ᦪ),ஹ5155(-1)2+4+5232-12+52(4)*ᡠ+Ḅᦪ
ᨵ᝞.ឋ(জᦪᨵᨬ12ᨵᨬᜧ)ঝᦪ
ᐵ678x=29:.

17ᦑrᫀu'Þ/ᦪᨵᨬVàáᨵᨬᜧà!Þ/ᦪ12ᐵx=2âூ௃T⚪9ᔠὃ+,GH/ᦪḄ12eឋ56᪷{1⊤ãq/ᦪḄ12⚪Ḅᐵ.21ஹ³ä᪆ூ᪆௃yNMONḄ7ᑖ0T,ᙠONhåæQV,ç[èé^êzOT(ë6(ëᓽuᡠ.ூ௃'᝞16(Pᓽuᡠ.T⚪ì⌕ὃ+y1-îᩖy16ᑭᵨ,7ᑖḄឋ56=(ᙠᑭᵨ¯âᨬñòḄó⚪.22ஹ(1)40(2)54,⊡1ä᪆!(3)330(4)2ூ᪆௃(1)᪷{ᵫõìö÷Ḅø1VḄùᦪᓰ30%,p[THû+Ḅöùᦪ!(2)£=2x360°=54஺6ᵫõìö÷Ḅø0.5VḄùᦪu40x35%=1440(3)qü40ýöõìö÷øþÿ1.5
Ḅᑖ600ᓽ(4)᪷⚪᪛ᯠᵫ᪛ᡠᨵḄ!⌱#
$AḄ%&'ᑭᵨᭆ᳛,-.ᓽ/ᫀ.ூ௃(1)•••4567Ḅ891
Ḅᨵ12:ᓰ30%,<12+30%=40,ᦑ/ᫀ>40(2)a=9x360°=54°,ᦑ/ᫀ>54404567Ḅ890.5
Ḅ:ᦪ>40x35%=14⊡ᐙB᝞D

18/ஹ14+8(3)600x--------=33040ᦑ/ᫀ>330(4)᪛DGHABCD/1\/1\/NRCDACDABDABC•.•ᐳᨵ12JḄ⌱#
$AḄᨵ6J,23ஹ(1)y=x2-7x+l(2)AABC>LMNMB.ᳮᵫP.᪆(3)RᔠᩩUḄ஺Ḅᙶ᪗>(4,1),(24,1),(0,;-7),(0,13).ூ.᪆௃(1)ᐜᑭᵨ\]^ᦪ.᪆-ᑮA(8,9),ᯠᑭᵨ`abᦪcdᱥf.᪆-;(2)ᐜᑭᵨdᱥf.᪆-haC(1,-5),iAM_LyjM,CN_LyjN,᝞klmABMnmBNCo9ῪLMNMBᑮNMBA=45஺ZNBC=45°,AB=8q,BN=10,rsᑮNABC=90஺ᡠAABC>LMNMB;(3)ᑭᵨtuaᳮvwAC=10B᪷LMNMBᑁᑗᙊ{|Ḅvw,-ᑮRtAABCḄᑁᑗᙊḄ{|=272~mABCḄᑁ>I,AiAIḄᚖfLfBIP,yjQ,AIyjG,᝞ᑣAIஹBI>MᑖfBILyjPQ>mABCḄ᜜Mᑖf᧕yj>AABCḄ᜜Mᑖf᪷MᑖfḄឋᑨPஹIஹQஹGᑮLfABஹBCஹACᵫBI=0x20=4,ᑣI(4,D,Ḽᑭᵨ`abᦪcLfAIḄ.᪆->y=2x-7,LfAPḄ.᪆->y=-x+13,ᯠᑖPஹQஹGḄᙶ᪗ᓽ.ூ.௃

19.D(1)A(m,9)ᐭy=x+lm+l=9,.m=8,ᑣA(8,9),[64+Sb+c-9A(8,9),B(0,1)ᐭy=x?+bx+cீc=lb=-7.c=1.•.dᱥf.᪆->y=x-7x+lᦑ/ᫀ>y=x2-7x+l(2)AABC>LMNMB.ᳮᵫ᝞Dx=ly=x2-7x+l=31-42+1=-5,ᑣC(l,-5),iAM_LyjM,CNJ_yjN,᝞VB(0,1),A(8,9),C(1,-5),.BM=AM=8,BN=CN=1,/.ABMnmBNCo9ῪLMNMB.,.ZMBA=45°,NNBC=45஺AB=80,BN=10,.•.ZABC=90°,/•ABC>LMNMB(3)•.•AB=8&,BN=1,.,.AC=10V2ARtAABCḄᑁᑗᙊḄ{|=6®+8\-l”¢=20,2~mABCḄᑁ>LAiAIḄᚖfLfBIP,yjQ,AIyjG,᝞,•1
4ABCḄᑁ.•.AIஹBI>Mᑖf.\BI_Lyj,sAUPQ,.••PQ
4ABCḄ᜜Mᑖf᧕yj>mABCḄ᜜Mᑖf.•.IஹPஹQஹG>mABCḄᑁMᑖfᡈ᜜MᑖfḄ¤¥ᑮLfABஹBCஹACBI=V2x2V2=4,

20

212Y2(x-2)(x-1).Dª-=+x+1(x+x-2_2x2(x—1)x+1x+12~7+T2Ḅ®᦮ᦪ.ᨵD2,1,0,ᐸ#x±2ᡈ1ᑖ²0,³RᔠᩩUᦑx´±0.,.µx=0ᐭª-=2ூ¶௃·⚪ὃ¹Ḅ9ᑖ-Ḅᓄ»¼½⌱¾ᦪ\a⌕ὃ⇋ᓄ»ÁḄ-Â9ᔲᨵÄ.25ஹ(1)AMEF9ῪNMB(2)P.᪆(3)klP.᪆(4)—713ூ᪆௃(1)ᵫAD஻BC,NMFE=NCEF,ᵫᢚÆZMEF=ZCEF,ÇNMFE=NMEF,ᓽᑮME=MF,ÈsAMEF9ῪNMB(2)iACḄᚖLᑖfᓽᑮᢚÉEF,ÇjÊËḄឋᓽᑮDḄÌÍ(3)ÇmBEQgZ\DFP,PF=QE,ÇmNCPÎ4NAP,AN=CN,ÇRtAMCNgRtAMAN,NAMN=NC'MN,ÈsᑮmMEF9ῪNMBÇNfᔠ\ᓽᑮMO_LEFÏMOᑖEF(4)ÇDᡠÐḄÑ|9஺>ᙊ4>{|ᙊM>240஺ḄᡧBḄÓᓽᑮDᡠÐḄÑ|ḄÔ.ூ௃(1)AMEF9ῪNMB.ᳮᵫD•.•ÕÖBABCD9×B.♦.AD஻BC,:.ZMFE=ZCEF,ᵫᢚÆZMEF=ZCEF,:.ZMFE=ZMEF,.♦.ME=MF,.,.MEF9ῪNMB.(2)ᢚÉEFnᢚÆḄB᝞ᡠ³:

22DfFD5BE(3)᝞,D,BECVFD=BE,ᵫᢚÆDF=DF,.,.BE=D'F,ᙠ4NC'Qn4NAP#NC'NQ=N,ANP,ZNC'Q=ZNAP=90°,.,.NC'QN=NAPN,VZC'QN=ZBQE,ZAPN=ZD'PF,.,.ZBQE=ZD'PF,ᙠABEQ^HAD'FP#NBQE=NDPF{BE=D'F,AP=C'Q.•.BEQ^AD'FP(AAS),.PF=QE,•••ÕÖBABCD9×B.*.AD=BC,AAD-FD=BC-BE,.,.AF=CE,ᵫᢚÆC'E=EC,AF=CE,.,.AP=C'Q,ᙠ4NAP#

23NC'NQ=ZANP{4NC'Q=/NAP,AP=C'Q.,.NC'P^ANAP(AAS),.,•AN=C'N,ᙠRtAMC'NnRtAMAN#MN=MN'AN=C'N'.'.RtAMC'N^RtAMAN(HL),.,.ZAMN=ZC'MN,ᵫᢚÆZC'EF=ZCEF,,••ÕÖBABCD9×BAD஻BC,.*.ZAFE=ZFEC,.,.NC'EF=NAFE,ME=MF,AAMEF9ῪNMB.♦.MOJLEFÏMOᑖEF(4)ᙠEᵫBÚÛᑮCḄÜ#DᡠÐḄÑ|9O>ᙊ4>{|ᙊM>24()஺ḄᡧBḄÓ,᝞Dᦑ/ᫀ>§ூ¶௃

24⚪kLᔠ⚪⌕ὃ\]ᢚ⚪wkḄᑨrwឋஹBῪjfkḄᑨrwឋᐰjfkḄᑨrwឋḄLᔠ¢ᵨ_`abῪjfkḄᑨrrᳮiឋrᳮ@Y⚪Ḅᐵx.26ஹ(1)373(2)£@᪆ூ᪆௃(1)᧕¥AABD^ZSCBD,¦ᑭᵨ§30஺Ḅ7fjfkuABஹBDḄᓽu☢©.(2)ªVBᐵ6ADḄ9:V«,VBᐵ6CDḄ9¢VB”¬BB”,wADஹCD®6EF,AEFᓽ'ᡠu.ூ௃(1)VAB=BC,AD=CD=3,ZBAD=ZBCD=90°,.,.ABD^ACBD(HL):.ZADB=ZCDB=-ZADC=30°,22CkABCDḄ☢©'2sAABD=36(2)ªVBᐵ6ADḄ9:VB\VBᐵ6CDḄ9¢VB"¬BB”,wADஹCD®6EF,BEFḄᕜ'BE+EF+BF=BE+EF+B"F=BB”'ᨬ°.ᦑE±BEFḄᕜᨬ1.ூ௃⚪⌕ὃ\§30஺Ḅ7fjfkw9:ឋḄ¢ᵨ@⚪Ḅᐵx᪷⚪ª²¢Ḅ
ku@.

2527ஹ³´Ḅµ¶12km/h,ᐳ¸´Ḅµ¶lkm/h.ூ@᪆௃991?³´Ḅµ¶'xkm/h,ᑣᐳ¸´Ḅµ¶'3xkm/h,᪷⚪(------=!@ᑖB«¹ᓽ.x3x2ூ@௃@(?³´Ḅµ¶'xkm/h,ᑣᐳ¸´Ḅµ¶'3xkm/h,991᪷⚪(x3x2@(x=12,º»¼x=12½ᑖB«¹Ḅ@•*.3x=l.%(³´Ḅµ¶12km/h,ᐳ¸´Ḅµ¶1km/h.ூVW௃Y⚪ὃ᪶¿V(ᑡᑖB«¹@¢ᵨ⚪.@⚪ᐵxV(Á²ᐵsᑡ«¹.