海南省2021-2022学年中考数学模拟试卷（一模）含解析版

《海南省2021-2022学年中考数学模拟试卷（一模）含解析版》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。

ூ
⚗ᡭẚ௃ᓭḕ2021-2022ὃᦪᔁᔁ᱐ஹ⌱⌱ᐳ14⚪⚪3ᑖᑖ42ᑖ1.-3Ḅ!"11A.-3B.3C.D.332.$x=l%&ᦪ'4-3xḄ!"A.1B.2C.3D.43.(ᑡ*+,-Ḅ"A.(2a)2=2a2B.a6-^-a3=a3C.a3*a2=a6D.3a2+2a3=5a54../012345᎝789:;<=>2ᜧ@ABCᐳD5EFG᪷Iᐰ2CᐳD5EKLMNO75000PᵨRSᦪT⊤V75000"A.0.75x105B.7.5x104C.7.5x1o5D.75x1035.fᦪIg2,5,4,3,2Ḅhᦪ"A.4B.3.2C.3D.2Q..
m6.ᓄkḄlm"n88-nA.1B.-1C.8D.-87.᝞X"ᵫ6Z[\Ḅ]0ᙽ_ᡂḄ=abcZ=abḄdeX"k28.p\qrsᦪtḄXuv-,3,ᑣcZsᦪḄXuxv)x3y1⚓/K22⚓

14,2)A.(2,-1)B.(--,2)C.(-2,-1)D.29.|}~.aḄ,0Ḅ☢.8,ᑣ(ᑡT┯Ḅ"A.4"ᙠᳮᦪB.஻"0f-8=0ḄC.a"8Ḅ+0᪷D.3

2EDB-A.3¼ஹ½¾⚪ᐳ4⚪⚪4ᑖᑖ16ᑖ15.¿'ᑖg/-4//=.3216.0=—Ḅ"xx-217.᝞XOOḄ²Ã48vC,ºl/஺ÄÅÆ:஺஺vºlEC.p43=8,8=2,ᑣECḄ._______.18.ÈOACBᙠ☢±¸ᙶ᪗ÊḄᙢh᝞XᡠVvCḄᙶ᪗"6,0,vAḄÍᙶ᪗"1,ᑣvBḄᙶ᪗..ÎஹÏ⚪ᐳ6⚪ᑖ62ᑖ19.
1*+gÐÑn+|-6Ô-13-2x+l>5
2'fgீx+1ு4(x-2)20.>ᵯᘤᖪÚAஹB©ÛÜ¡*+ᘤ©Û*+ᘤḄÝÞßàᑖ.á30ᐗ40ᐗᖪÚ5áAÜ¡¬1áBÜ¡*+ᘤãäᑭæ76ᐗç6áAÜ¡¬3áBÜ¡*+ᘤãäᑭæ120ᐗ.èᖪÚAஹB©ÛÜ¡*+ᘤḄßàᑖ"éêᐗëᑭæ=ßà-ÝÞßà21.ᙠᜧìíîï᩽ñnbòóôMõö÷îï“ᡃᨬûüḄbò⚗ý”Ý5/ÿ
☢ᦪᑴḄḄ
1,2.᪷3⚓/22⚓

3"#Ḅ$%&'()ᡂ+:12(1)./ᐳᨵ2ᐜ45(2)⊡ᐰᩩ9•
5(3)ᙠᡧ9
“>?ᳫ”BᑖᡠEFḄᙊHIJᦪK5(4)Lᐰ᪥ᨵ20002ᐜ4Nᐸ”BᑖḄᐜ4PᦪK.22.᝞SᦪTᐶᕡWXᙠYZ[T᪥\ᩚḄ^J._`WabḼZ[defᙢ☢Ḅhi(AB)1.7jk\ᩚ⚔BEḄmIK30஺5WopḼZ[defᙢ☢Ḅhi(CD)0.7jk\ᩚ⚔BEḄmIK45஺.Pqh5jrst\ᩚuv(wBஹDஹFᙠuyz).(1)|Woᑮ\ᩚḄhiDF.(~ᶇ᪷)(2)|\ᩚEFḄ^J.(~ᶇ᦮ᦪὃᦪ4,6.7)23.᝞জADKῪIAABCḄ^wAwCᑖᙠ9DEFGḄDGDE,BGஹAE.(1)|BG=AE5(2)9DEFGwDzEGwA(᝞ঝᡠ)জ|BG±GE5ঝDGfABtwM,LAG=6,AE=8,|DMḄ.4⚓/22⚓

424.᝞£ᱥz¥ax2+bx+c(a#0)fxtwA(-1,0),B(3,0)wfyt(2)|´BCM☢·f´ABC☢·Ḅ¸5(3)LPxº»¼wP½¾zPQ஻AC£ᱥztwQ,ÁḼPwḄ¼ᙠ£ᱥzÃᔲÅᙠÆ᪵ḄwQ,È(A,P,Q,CK⚔wḄÉ9KÊËÉ9ÌLÅᙠ|ÍQwᙶ᪗5LÅᙠ▊Ñᳮᵫ.5⚓/22⚓

5ூÖ⚗ᡭẚ௃Ûᓭḕ2021-2022TÞὃᦪTßàáᔁºßã&᪆᱐ãஹ⌱⌱ᐳ14⚪⚪3ᑖᑖ42ᑖ1.-3Ḅæã11A.-3B.3C.--D.º33ூ'ᫀ௃Bூ&᪆௃ூᑖ᪆௃᪷èᦪḄæéḄqêᦪëìÍ'ᫀ.ூí&௃᪷æḄឋïìð31=3.ᦑ⌱B.ூwe௃ó⚪ὃæḄឋï◤|ö÷øèᦪḄæéóùèᦪḄæéḄqêᦪ.2.x=lúᦪû4-3xḄæãA.1B.2C.3D.4ூ'ᫀ௃Aூ&᪆௃ூí&௃á⚪ᑖ᪆üx=lúᐭúᦪû4-3xᓽëìÿ=4-3=1.ᦑᫀ⌱A.ὃᦪ.3.ᑡḄA.
2aJ=2a2B.a6-^a3=a3C.a3,a2=a6D.3a2+2a3=5a5ூᫀ௃Bூ᪆௃ூ௃Aஹ
2a2=4a2,ᦑ⌱⚗┯!.Bஹa64-a3=a3ᦑ⌱⚗.Cஹa3»a2=a5,ᦑ⌱⚗┯!.Dஹ3a2"2a3,#$ᔠ&'(⚗ᦑ⌱⚗┯!.ᦑ⌱B.)6⚓/,22⚓

64.-./012345᎝789:;5<=>?1ᜧABCDᐳF4GHI5᪷K5ᐰ1DᐳF4G,MN>OP75000Q5ᵨSTUᦪV⊤X75000A.0.75x105B.7.5X10&C.7.5xl05D.75^103ூᫀ௃Bூ
᪆௃ூ௃ᵨSTUᦪV⊤X750007.5X104,ᦑ⌱B.5.YZᦪK2,5,4,3,2Ḅ[\ᦪA.4B.3.2C.3D.2ூᫀ௃Cூ
᪆௃ூ௃]⚪ᑖ᪆[\ᦪ⌕aᦪKᢥcdᑮᜧḄfg▰ᑡ5\iᨬkᜮḄYmᦪᡈkmᦪḄoᙳᦪ-[\ᦪ5OᦪKᵫdᑮᜧ▰ᑡ2,2,3,4,5,ᡠs[\ᦪ3,ᦑ⌱C.ὃ[\ᦪ.6.ᓄuYvY+xḄyz{Y88Y{A.1B.-1C.8D.-8ூᫀ௃Aூ
᪆௃777-8772-8{Y8ᦑ⌱A.7.᝞}ᵫ6m~Ḅd/ᙽᡂḄ=5m=Ḅ})7⚓/,22⚓

7ூᫀ௃Aூ᪆௃ூ௃]⚪ᑖ᪆c☢᧕ᨵ4m/5)ᨬᨵYm/.ᦑ⌱A.ὃuᓫZᔠḄ}.k78.ᦪy=—Ḅ}(---,3),ᑣmᦪḄ}Y()x3A.(2,-1)B.(--,2)C.(-2,-1)D.(Y,2)22ூᫀ௃Aூ᪆௃ூ௃,ᦪYḄ}(-3),x32Ak=(----)X3=~2,3Aஹ2X(-1)=-2,>¢ᙠᦪḄ}x5ᦑ⌱⚗¤B.V(--)X2=-1H-2,.•.¢#ᙠᦪḄ}x5ᦑ⌱⚗┯!¤2Cஹ(-2)X(-1)=2W-2,...¢#ᙠᦪḄ}x5ᦑ⌱⚗┯!¤D,V(-)X2=lK-2,...¢#ᙠᦪḄ}x5ᦑ⌱⚗┯!.2ᦑ⌱A.9.¦§¨-஺Ḅ/Ḅ☢ª-8,ᑣᑡ«V[5┯!Ḅ()A.஺ᙠᳮᦪB.a//Y8=0ḄC.஺8Ḅ®o/᪷D.3

8ᦑ⌱D.ூ¸௃⚪ὃ¹.ᙠᳮᦪ5®o/᪷5/Ḅs±ᙠᳮᦪ²5ºUᭆ°⚪Ḅᐵ¼.10.᝞}5CA_LBEiA,AD஻BC,Nl=54஺5ᑣNC¾iA.30°B.36°C.45°D.54°ூᫀ௃Bூ᪆௃ூ௃AD஻BC,Zl=54°,AZB=Z1=54°.CA_LBEiA,/.ZBAC=90°,ZC=90°-ZB=90°-54°=36°.ᦑ⌱B.11.ᙠRtZ\ABC[5ZA=90°,NABCḄoᑖ¿BD:ACiD,AD=3,AB=4,ᑣDÀIjBCḄÁÂA.3B.4C.5D.6ூᫀ௃Aூ᪆௃ூ௃ÃDÄDE_LBC,VBDNABCḄoᑖ¿,NA=90஺,)9⚓/,22⚓

95AD=DE=3,5DᑮBCḄÁÂ3,ᦑ⌱A.¸¢⚪ὃ¹.Ìoᑖ¿ḄឋÎ5ᐵ¼ÏÐÌḄoᑖ¿xḄᑮÌḄkÁÂ~¾.12.Ym#ÓNḄÔÕ[ᨵÖm×ᐰ~Ḅdᳫ5aÙÚᑖÛ᪗Ý-1,2,3,4,ßà᥎3Ymdᳫâ#ãä5åßà᥎3Ymdᳫ5ᑣkæ᥎3Ḅdᳫ᪗Ýçè¾i5Ḅᭆ᳛-11-11A.-B.-C.-D.Y5432ூᫀ௃cூ᪆௃ூ௃]⚪ᑖ᪆ì᪛î}:ᐳᨵ12ð¾·$Ḅyz5kæ᥎3Ḅdᳫ᪗Ýçè¾i5Ḅᨵ4ðñò5.•.kæ᥎3Ḅdᳫ41᪗Ýçè¾i5Ḅᭆ᳛=ó.ᦑ⌱ô123ὃᑡ⊤V"᪛î}V.13.᝞}5sAB-õöḄ஺0,"BCᑗiB,AC"஺0:iD,E஺0xḄY5ZE=40°,ᑣ/C¾iூᫀ௃Cû௃ூ௃üýBD,᝞}ᡠX:)10⚓/,22⚓

10BC-ᑗ¿5AB-õö5AAB±BC,AZABC=90°,VAB-õö,.*.ZADB=90o,VZABD=ZE=40°,AZBAD=90°-40°=50°,•ZC=90°-ZBAC=40°.ᦑ⌱C.14.᝞}5ᙠþABCD[5AB=4,BC=8,ÿ
ACḄᚖᑖ
ᑖADஹACEஹO,CE,ᑣCEḄ()A.3B.3.5C.5D.5.5ூᫀ௃Cூ᪆௃ூ௃•ABCD!,ACD=AB=4,AD=BC=8,•EOACḄᚖᑖ
#AE=CE,$CE=x,ᑣED=AD-AE=8-x,ᙠRtACDE&#CE2=CD2-t-ED2,ᓽX2=42+(8-X)2,(x=5,ᓽCEḄ5.)11⚓/,22⚓

11ᦑ⌱c.ூ1௃ὃ34!Ḅឋ6ஹ789ᳮஹ
;ᚖᑖ
<Ḅᑮ
;>?Ḅ@ABCḄឋ6DEFGH789ᳮ#IBJḄKᓄMNOPḄ⚪ḄᐵS.TஹUV⚪(ᐳ4X⚪#YX⚪4ᑖ#Zᑖ16ᑖ)15.]^ᑖ.ூᫀ௃(m+2n)(m-2n)ூ᪆௃ூ௃m2-4n2,=m2-(2n)2,=(m+2n)(m-2n).3216.ghN=——Ḅx=_.xx-2ூᫀ௃6ூ᪆௃ூ௃l⚪ᑖ᪆>Mmnx(x-2)o(3(x-2)=2x,(x=6,qrsx=6ghḄ᪷.17.᝞w#0OḄz{|C,~/O0஺E,~EC.AB=8,CD=2,ᑣECḄ_______.ூᫀ௃2ூ᪆௃ூᑖ᪆௃᝞w#EB.᪷ᚖ{9ᳮ#$z{r,ᙠRtZXAOC&#o(rḄ;AEB^AAOC,o(ᑮEBḄ#ᙠRtAECB&#ᑭᵨ789ᳮ(ECḄூ௃᝞w#EB)12⚓/,22⚓

12V0D1AB,AB=8,AAC=4$஺஺Ḅz{r:CD=2,.-.OC=r-2ᙠRt^ACO&#AC2+OC2=AO2>ᓽ42+(N2)2=/(r=5,.,.0C=3,/AEGOḄ{##/EBA=90°.•.OAC<^AEAB.EB_AED.EB=6'OC~AOᙠRtaCEB&#BC2+BE2=CE2,BP42+62=CE2(CE=2V13ᦑᫀ2A/TJூ1௃⚪ὃ3ᚖ{9ᳮஹ¡789ᳮ#◤£¤#ᚖ{9ᳮ&¥Oᩩ§“©TªP”#⚪©⍝ᚖ¡ᙊ¯°>Oᩩ§18.±OACBᙠ☢ᙶ᪗µ&Ḅᙢ·᝞wᡠ¹#CḄᙶ᪗º6,0»,AḄ¼ᙶ᪗1#ᑣBḄᙶ᪗____.ூᫀ௃º3,-1»ூ᪆௃ூ௃ᵫOACB±#CḄᙶ᪗º6,0»,ᡠn¾
¿Bᚖᑖ#ᑣBḄÀᙶ᪗3,ᵫAḄ¼ᙶ᪗1,ᡠnBḄ¼ᙶ᪗ᦑBº3,-1»Pஹ⚪ºᐳ6X⚪#Zᑖ62ᑖ»19.º1»ÁÂA/3XV12+|-6|Xº-1»3-º--»'2D2x+l>5º2»ÄC^Å:x+1>4(x—2)ூᫀ௃º1»-9Dº2»ÄC^ÅḄÆ2Vx<3.)13⚓/,22⚓

13ூ᪆௃ூ௃l⚪ᑖ᪆º1»᪷ÇÂÈÉÊËÁÂDº2»ᐜ(YOÄC^Ḅ#ÍÎᐳᓽo.l⚪᪆º1»Ï^=#3xl2+6xº-1»-9=6-6-9=-9DJ2x+l>5জফjx+l>4ºx-2»ঝজ(x>2,ঝ(x<3,ᡠnÄC^ÅḄÆ2Vx<3.20.×ᵯᘤᖪÛAஹB>ÜÝÞÁÂᘤ#>ÜÁÂᘤḄßàáâᑖYã30ᐗ#40ᐗ#ᖪÛ5ãAÝÞ¡1ãBÝÞÁÂᘤ#oåᑭæ76ᐗD6ãAÝÞ¡3ãBÝÞÁÂᘤ#oåᑭæ120ᐗ.ᖪÛAஹB>ÜÝÞÁÂᘤḄáâᑖçèᐗéºᑭæ=áâ-ßàáâ»ூᫀ௃AÜÝÞÁÂᘤḄáâ42ᐗ#BÜÝÞÁÂᘤḄáâ56ᐗ.ூ᪆௃ூ௃l⚪ᑖ᪆$AÜÝÞÁÂᘤḄáâxᐗ#BÜÝÞÁÂᘤḄáâyᐗ#᪷⚪ëoCìᐵµজ5ãAÝÞ¡1ãBÝÞÁÂᘤ#oåᑭæ76ᐗDঝ6ãAÝÞ¡3ãBÝÞÁÂᘤ#oåᑭæ120ᐗ#᪷CìᐵµᑡîghÅ#Íᓽo.l⚪᪆$AÜÝÞÁÂᘤḄáâxᐗ#BÜÝÞÁÂᘤḄáâyᐗ#ᵫ⚪ë(f5
x-30+
y-40=76]6
x-30+3
y-40=12C(ï¥#ly=56AÜÝÞÁÂᘤḄáâ42ᐗ#BÜÝÞÁÂᘤḄáâ56ᐗ.21.ᙠᜧòó&#Môõö᩽øùúûüý#Xþÿ
“ᡃᨬḄ⚗”☢ᦪ!"ᑴḄ$%&'(Ḅ)*)1,)2..01᪷)345Ḅ6789:;ᡂ=>?14⚓/C22⚓

14人数公1614121OS642O(1)G
ᐳᨵJᐜLM(2)⊡ᐰᩩQ)M(3)ᙠᡧQ)3“UVᳫ”Xᑖᡠ[\Ḅᙊ^_`ᦪaM(4)bᐰ᪥ᨵ2000JᐜLᑣ“ᐸ”XᑖḄᐜLgᦪa.ூ9ᫀ௃প50M(2)⊡ᐰᩩQ)m8᪆;(3)115.2°M(4)400.ூ8᪆௃ூq8௃r⚪ᑖ᪆>(1)ᵨᨬuᳫḄgᦪ◀:wᡠᓰḄyᑖz{|CᐳḄᐜLᦪM(2)ᵨᐜLḄCgᦪ}:ᔜXᑖᡠᓰḄyᑖz{|ᨬᳫḄgᦪᐸḄgᦪᓽ{ᩩQ)⊡ᐙ'(M(3)ᙊ^_Ḅ`ᦪ=360°XwᡠᓰḄyᑖzM(4)✌ᐜḄᐜL3“ᐸ”ᡠᓰḄz}:Cgᦪ2000ᓽ{.r⚪8᪆>(1)ᐜLᦪ=15+30%=50gMᦑ9ᫀa50M(2)ᨬᳫḄgᦪ50xl8%=9,ᐸḄgᦪᨵ50-15-9-16=10gMᩩQ)᝞;>.人数1614121086420(3)“UVᳫ”Xᑖᡠ[\Ḅᙊ^_`ᦪa>360஺ஹ=115.2஺M50?15⚓/C22⚓

15ᦑ9ᫀa115.2°M*4.“ᐸ”XᑖḄᐜLgᦪ>2000x12=400J,50ᦑ9ᫀa400.22.᝞)ᦪᐶᕡᙠ᪥¡ᩚḄ£`.¤¥¦§Ḽ©ª«ᙢ☢Ḅ®*AB.1.7²³¡ᩚ⚔XEḄ¶_a30஺>·¸Ḽ©ª«ᙢ☢Ḅ®*CD.0.7²³¡ᩚ⚔XEḄ¶_a45஺.$g»5²¼½¾¡ᩚ¿*ÀBஹDஹFᙠ&ÂÃ..*1.Ä·ᑮ¡ᩚḄ®DF.*ÆÇÈᶇ᪷Ê.*2.Ä¡ᩚEFḄ£`.*ÆÇÈᶇ᦮ᦪÌὃᦪ>&F.4,73=1.7.ூ9ᫀ௃*1.DF=*4+3y/3.²M*2.¡ᩚḄ£`Ða10².ூ8᪆௃*ᑖ᪆Ñ*1.ÀAÒAM±EF¾M,ÀCÒCN±EF¾N,ÖCN=xᑣEN=x,AM=5+x,{ÄEM,ᙠRtAAEM3ᑭᵨÚ_ÛᦪᐵÝ{ÄDFḄÞ.*2.ᵫEM+FM{ÄEFḄÞ.ூq8௃*1.ÀAÒAM_LEF¾ÀM,ÀCÒCN_LEF¾ÀN.ÖCN=xᙠRtAECN3VNECN=45஺M.EN=CN=x/.EM=x+0.7—1.7=x—1VBD=5/.AM=BF=5+xᙠRtAAEM3VZEAM=30°.EM_43åæ?16⚓/C22⚓

16X-1=-y-*%+5.8|x=4+3yᓽDF=4+3y*².*2.EF=x+O.7=4+373+0.7=4+3xl.7+0.7=9.8-10*².ὃÀ>8è_Ú_QḄéᵨ-¶_ê_ᡂ=.23.᝞)জADaìῪè_AABCḄ£ÀAÀCᑖîᙠïðQDEFGḄòDGDE,óôBGஹAE.*1.Äõ>BG=AEM*2.öïðQDEFG÷ÀDøùúÃûEGÀAü*᝞)ঝᡠþ.জÄõ>BG1GE>ঝÖDG«ABÿ
M,AG=6,AE=8,DMḄ.জঝூᫀ௃1᪆2জ᪆ঝDM="#$7ூ᪆௃ூ&௃'⚪ᑖ᪆*1᝞জ$᪷-.Ὺ01213Ḅឋ56AD=BD,8᪷-9:3Ḅឋ56NGDE=90஺$DG=DE,ᑣ@᪷-“SAS”ᑨEaBDGGZiADE,J6ᑮBG=AE2জ᝞ঝ$ᐜᑨE4DEGN.Ὺ012136ᑮN1=N2=45°,8ᵫaiiDGR4ADE6SUN3=N2=45°,ᑣ@6NBGE=90°,ᡠWBG1GEঝᵫAG=6,ᑣAE=8,ᓽGE=14,ᑭᵨ.Ὺ01213Ḅឋ56DG=Y2GE=7&ᵫ12Ḅ]^6BG=AE=8,ᑣ᪷-_`aᳮ6AB=10,cḼᵫ4ABDN.Ὺ012136ᑮ/4=45°,BD=—AB=5V2hᯠjDBMS/XDGB,ᑣᑭᵨklm@nopDM2'⚪᪆*1*᝞জ$q17⚓/s22⚓

17VADN.Ὺ01tABCḄu$$AD=BD,:wx3DEFGN9:3$AZGDE=90°,DG=DE,ᙠABDGz^ADE{BD=ADq18⚓/s22⚓

1825.DM=-0,7জூ
௃ὃwx3Ḅᔠ⚪*.Ὺ01213Ḅឋ5z9:3Ḅឋ5ᵨᐰ.213Ḅᜐᳮ.Ḅᡂᑭᵨᦪ⊤@R6⊤ḄᐵᵨklmḄ.24.᝞$ᱥ¡ax2+bx+c(a#))¨x©ª
A(-1,0),B(3,0)«
$¨y©ª
C(0,-3).(1)®ᱥḄ᪆¯⚔
Mᙶ᪗(2)aBCM☢´¨aABC☢´Ḅm(3)PJx©¶·¸¹
$ºP»¼PQ஻ACªᱥ
Q,¿ḼP
Ḅ¹$ᙠᱥ¶ÀᔲÂᙠÃ᪵Ḅ
Q,ÅWA,P,Q,CN⚔
Ḅwx3NÆÇwx3ÈÂᙠ$ÉpQ
ᙶ᪗ÊÂᙠ$É▊ᳮᵫ.ூᫀ௃(1)y=(x-1)2-4,M(1,-4)(2)SABCM&SBc=l*2(3)Âᙠ$Q(2,-3)iAᡈ(1+J7$3)ᡈ(1-J7$3)q19⚓/s22⚓

19ூ᪆௃ூᑖ᪆௃(I)ᨵᱥ¨x©ª
A(-1,0),B(3,0)«
$ᑣ@Ðᱥ᪆Ny=a(x+1)(x-3).ᵫ¨y©ª
C(0,-3),ᑣᐭ᧕6᪆$⚔
᧕(2))BCM☢´¨aABC☢´Ḅm$ᵫ«213ÊNÓuᡈÓÔ$ᡠWὃ⇋p«213☢´8»mᓽ@.ᵫSABCM=SÖ)(0cMD+SABMD-SABOCSAABC=~*AB»OC,ᑣ]^᧕65(3)ᵫwx3NÆÇwx3$ᑣ×xPQஹACÆÇÙ.$ºQ
»x©Ḅᚖ᧕6Qᑮx©ḄÛÜ=OC=3,Ý(1)6ᱥ᪆$ᐭᓽ6Q
Þᙶ᪗$ᑣQ
@.ூ&௃*(1)Ðᱥ᪆Ny=a(x+1)(x-3),:ᱥº
(0,-3),-3=a(0+1)(0-3),.*.a=l,ßᱥ᪆N¡(x+1)(x-3)=x2-2x-3,*/y=x2-2x-3=(x-1)2-4,AM(1,-4).(2)᝞1,àcBCஹBMஹCM,»MDJ_x©D,°IISAABC=1,AB«OC=143=6,22SABCM&SAABC=3&6=1&2.q20⚓/s22⚓

20(3)Âᙠ,ᳮᵫ᝞á*জ᝞2,âQᙠx©á:ã,»QE_Lx©E,♦.•wx3ACQPNÆÇwx3,#.PQÆÇÙ.AC,.♦.)PEQä)AOC,EQ=OC=3,-3=x2-2x-3,6x=2ᡈx=0(¨C
åᔠ,æç)$.Q(2,-3).ঝ᝞3,âQᙠx©¶:ã$»QF_Lx©F,♦.•wx3ACPQNÆÇwx3$#.QPÆÇÙ.AC,.•.)PFQ^AAOC,/.FQ=OC=3,."-3=x2-2x-3,6x=l+J7ᡈx=1-J7.Q(1+V7>3)ᡈ(1-V7,3).¶ᡠè$Q
N(2,-3)ᡈ(1+V7-3)ᡈ(1-é$3)q21⚓/s22⚓

21ூ
௃ê⚪ὃßëìᦪᔠ⚪ÆÇwx3Ḅឋ5.q22⚓/s22⚓