1BEC6.ᑡᑨ┯ḄGPA.ḄB.ᚖ ᑖḄ C.ᚖ Ḅ !"D. ᑖḄ 7.$%&'ᙽ)*Ḅ⚔,-ᙠ/Ḅ'0%1Nl=50%ᑣN2Ḅ4ᦪ56P.A.50°C.30°D.25°8.$ᡠ8%ᨵ'ᩩ;AABCGAB>ACPḄ %<;GP.EFCA.;G”B.;AOC.;AED.;”9.>ᦪa,b,c,dᙠᦪ?0Ḅ@,ḄAB$ᡠ8%ᑡCDজaVbঝ|b|=|d|ঞa+c=aটad>0 %!FḄᨵ6Gabcd-4*-3-2-10~1~i~3~4^B.3HC.2HD.1H10.$%ᙠRtAABC %ZB=90°,NA=30%I,A5ᙊK%BCL5MNOPQABR,D,ᑖSI,AஹD5ᙊK%ABL5MNOP%UPQR,E,VWAE,DE,ᑣNEADḄXYZ6G
2A\R c6V3A.•D•L♦nD•12632]ஹ^_⚪(ᐳ7c⚪%dc⚪3ᑖ%eᑖ21ᑖ)11.$%!"ABCD %AB=2,g;CDh,Cij┐lm90nᑮ;CE,;BDh,Bij┐lm90nᑮ;BF,VWBF,ᑣ$ ▢qrᑖḄ☢t.12.$%ᵫ'wcx"ᙽᡠyz{|Ḅ)}~$%1ᙠᡠyz{|ḄẠ0(ᦋz{| cx"ᙽḄAB),Ḅcx"ᙽ%Iyᡂ'Hᜧ!"|%◤⌕Hcx"ᙽ.13.$% ☢ᙶ᪗ %OABCḄ⚔,A(-6,0),C((),273).gOABCh,Oij┐"ᔣlm%,AាᙠOB0Ḅ,Aiᜐ%ᑣ,BḄ@,*Ḅᙶ᪗5.14.ᜧVᑁUᙢ¢£Ḅ¤¥160ᓟ§%1¨©I ᙳdcj80ᓟ§Ḅ«4¬ᜧVᑁ®%ᑣ¨©¤Ḅ¯°±(ᓟ§)²Ḅj£x(cj)¢£Ḅ³ᦪᐵµ5.15.$%c¶&'ᙽ·ᨵ60Ḅ)*ḄUH⚔,-ᙠ/Ḅ0%¸¹nNl=25%ᑣN2Ḅ4ᦪ.\516.ᙠAABC %1NA,N8eº|cosA'—|+(sin5—")2=0,ᑣNC=_______.2217.¼½¾(6+G)(6-6¿.)ஹÀÁ⚪(ᐳ7c⚪%eᑖ69ᑖ)18.(10ᑖ)ÂÃÄÅƳᦪḄ$ÇÈÉ)H,A(-4,-3),B(2m,y%C(6m,y),ᐸ m>l.2
3 1Ëyi72=4j%ÌmḄZÍ 2$%É,BஹCᑖSÎx?ஹy?Ḅᚖ%UᚖQR,D,,Pᙠx?0%1)PBDḄ☢t8,ÏᑏÑ,Pᙶ᪗6◤⌕ᑏÀÁÉ°G.19. 5ᑖGᙠ ☢ᙶ᪗xOy %gÒᱥG:>=2+2Õ6Ö×GᔣØ ÙÕHᓫAL4ÛnᑮÒᱥG,,AÒᱥG2Ḅ⚔,.2 1WᑏÑ,AḄᙶ᪗Í 2É, 0,6 Rx?Ḅ/ÒᱥG2QR5,CU,.জËNK4c=90j.ÌÒᱥG2Ḅ⊤ÞµÍঝ160
422. 10ᑖG$1,ABCD %EADḄ ,%I,E⚔,Ḅ)EFGḄUEF,EGᑖSÉ,B,C,ZF=30°. 1Ìè¾BE=CE 2gAEFGh,Eᢥij┐"ᔣlm%ËlmᑮEFADìᔠjîïmð.1EF,EGᑖSAB,BCQR,M,N.6$2জÌè¾ABEMgZkCENঝ1AB=2,ÌABMN☢tḄᨬᜧZÍঞËlmîïj%,BាᙠFG06$3,Ìsin/EBGḄZ.23. 12ᑖGóᓤ⁚“÷øù%ᔛûü” ýþÿḄ.⁚ᒹ✁Ḅᑖ A,! B,ᾙ C,#$◀✁ᐸ'ᙳ).*+,Ḅᝤᝤ./01234ᐭ60 /0!7/0ᾙ8./09234ᐭ60ᾙ/0 7/0!.᪷;<=>?@ABCDᑡF⚪ᎷIJ123KLM/0ា+Mᑮ Ḅᭆ᳛RSTUᐜJ12WḄX03KLM/0YJ92WḄX03KLM/0@ᵨᑡ⊤\ᡈ^`aḄb\cMᑮḄ603/0 ஹ/0!Ḅᭆ᳛.24. 14ᑖe 1fg2-2-ᔈ+ 1-⌲e°+2sin60°.X—1x-22x—1 2ᐜᓄnYco pp—p 2ᐸ3x=-LXx+1X+2x+l
5rὃCᫀFஹ⌱⚪GHI⚪JᨵFLMNᫀHI⚪3ᑖOᑖ30ᑖP1ஹCூ᪆ᵫᔣUḄfᔣ±ᑨ³ᓽµ.ூ·¸¸Rᓫ*ᔣUa=-3e,ᡠ»defᔣ(hᡠ»C┯`ᦑ⌱C.ூ{¿À⚪ὃÁÂᔣUḄfᔣaÃẠ⚪ÅÆᓫ.2ஹBூ᪆ᵫ⚪ÇX-1N0ux-3#0,•".x>lux#3.ᦑ⌱B.3ஹAூ᪆᪷Éᢚ<ḄឋËÌNÍ)ᐵÎ᧕NA=NLDEayABCḄ^*~ᡠ»᧕BஹDᫀMNDaAB^{ᡠ»DB=DA,ᦑCMN.ூ᪷É⚪ǵDEaABCḄ^*~ᡠ»DEBCNB+N1+NC=18O BD=AD,.*.DBAaῪ.ᦑJᨵA┯BArCA.ᦑ⌱A.ூ{¿Ð⌕ὃÁÂḄᑁÓÔḄᐵλÕῪḄឋË.Ö×ÕᑮØᢚoᣚ»Õ^*~ᳮḄÛᵨ. 1ḄeÜ9(ÝḄLᑁ. 1Ḅᑁa180.ÞḄᦪßß⌕ᵨàáḄᑁa180âF◚äḄᩩæ.çèᢚ6ᙠᳫCᜐᙢ☢B{ḄᑖzR45BD=CD=100úᙠRtAACD^ÞûADḄüÉòᓽµÞûABḄü.ூ•.•ᙠᳫCᜐᙢ☢B{ḄᑖzR45.•.B=CZ)=]00•••ᙠᳫCᜐᙢ☢A{ḄᑖzR30.*.AC=2xl00=200"=72002-1002=100G.,.AB=AD+BD=100+10()V3=100(1+þ) ᦑ⌱O.ூ⚪ὃḄᵨ--ஹ⚪⌕ ᪀⌼ .5ஹDூ᪆ᑖ᪆#✌ᐜ&'()ABEF*+᪷-./0ᳮ234AEḄ567892()Ḅ☢;.<#TABEF,AFBE,=()ABEF*>?()TBF>ᑖNABC,=()ABEF*+ABAECBFDEO,VBF=6,BE=5,BO=3,EO=4,/.AE=8,ᑣ()ABEFḄ☢;=6x8+2=24,ᦑ⌱D.EG#⚪H⌕ὃḄI+ḄឋKLMᑨ00ᳮODPQR6Ḅ⚪S.T⚪ḄᐵVWI᪷-⚪X92()*+.6ஹAூ᪆ᑭᵨ+Ḅᑨ00ᳮஹZḄᑨ00ᳮஹ>?()Ḅᑨ00ᳮஹ[\Ḅᑨ00ᳮᑖ]3^_⌱⚗a?ᑨbcᓽef0[fḄ⌱⚗.ூ<#Aஹ34iQḄ()IZ┯kl3ஹ34imᚖ>ᑖḄ()I+[flCஹ34imᚖoiQḄ>?()I[\[flஹ34im>ᑖḄ()I>?()[flᦑ⌱#A.
7ூvwy⚪ὃz{⚪|}ᳮḄ⚪Ḅᐵ7Ḅᑨ}}ᳮᜧ.7ஹBூ᪆aᵫ6)cN3=N1=5O,᪷; 180N2=90-50°=40°.ᦑ⌱B.ூvwy⚪ὃzḄឋ6)⚪ᐵ.8ஹBூ᪆᪷;/¡Ḅ3v|¢¡ᡠ¤⚔vḄ¦§¨Ḅ3⌲/ᑨ©ᓽ.ூ«᪷;3Ḅ}¬40AABCḄ3.ᦑ⌱B.ூvwy⚪ὃzḄ3⚪Ḅᐵ/¡Ḅ3v|¢¡ᡠ¤⚔vḄ¦§¨Ḅ3.9ஹBூ᪆᪷;ᦪ¯=Ḅv⊤°Ḅᦪ±¡Ḅ²³´¡ḄᜧᨵᳮᦪḄ¶g·¤oḄ¸¬Cᫀ.ூ«ᵫᦪ¯a=-3.5,b=-2,c=0,d=2,জaVb,ᦑজº»8ঝ|b|=|d|,ᦑঝº»8ঞa+c=a,ᦑঞº»8টad<0,ᦑট┯À8ᦑ⌱B.ூvwy⚪ὃzÁᦪ|ᦪ¯ᑭᵨᦪ¯=Ḅv⊤°Ḅᦪ±¡Ḅ²³´¡ḄᜧᨵᳮᦪḄ¶g·¤oḄ¸¬⚪ᐵ.10ஹBூ᪆Ã⚪᪆aᡠ°
8BEqBC=x,•.,ᙠRtAABCPZB=90°,ZA=30°, .AC=2BC=2x,AB=6BC=ux,᪷-⚪X9#AD=BC=x,AE=DE=AB=yf3x,vEM_LAODM,wxyAM=LAO='X,221ᙠRt/AEMPcos^E4D=AM=2z_5~AE~l/3x~~6ᦑ⌱B.ூEG⚪ὃஹ{30ḄḄឋKஹQῪḄឋKஹ}ᦪQv 42AMIT⚪ḄᐵV.=ஹ⚪ᐳ7⚪^⚪3ᑖᑖ21ᑖ11ஹ6-7Tூ᪆AZDCB=90°,DC=BC=AB=2,ZDCB=45°,ᵫ./0ᳮ9#BD=20,
9• •4CDEC┐909ᑮ4CE,4BDEB┐909ᑮ4BF,AZDCE=90°,BF=BD=2V2ZFBE=90°-45°=45°,/.BM=FM=2,ME=2,•*,▢ᑖḄ☢;S=SCD+S4BFE+SᡧDC£—SᡧD8/=1X2X21X4X2^.0X(2,Ḅᐔ+2+22360360ᦑᫀ*#6-TT.EG#⚪ὃḄឋK[\ḄឋKᡧḄ☢;QE2ᔜ_ᑖḄ☢;I⚪ḄᐵV.12ஹ54ூ᪆¡⚪᪆#ᵫH¢£e¤ᡂḄ¦§¨ᨵªoᨵ4«U;ᵫ¬¢£e¤ᡂḄ¦§¨ᐳᨵ3?l®ªᨵ7_[\¨=ªᨵ2_[\¨ªᨵ1_[\¨ᐳᨵ10_[\¨•.•¤ᙠ¯_¦§¨Ḅ°Ạ²³´iµᜧḄ[\¨L¤ᡂ®_ᜧ[\¨.,•¤ᡂḄᜧ[\¨Ḅᐳᨵ4x4x4=64_[\¨,·¸¹◤⌕64-10=54_[\¨.ூEGᐜᵫH¢£ஹ¬¢£ஹ¢£2»ᩭḄ¦§¨ᐳᨵ10_[\¨½᪷-¤ᡂḄᜧ[\¨Ḅᐳᨵ4x4x4=64_[\¨ᓽe92ᫀ.⚪ὃ3¢£¾¿À6ÁᮣÃÄᵨŵƨÇ3ÈÉÊÅ\☢ḄὃᐵVI2¤ᡂḄᜧ[\¨ᐳᨵ˸_[\¨.13ஹ(-273,6)ூ᪆ᑖ᪆#ABOB”vBiHLOADH,&'AAOBgZ^HBiO,9ᑮB1H=0A=6,OH=AB=26,9ᑮᫀ.<#ABOBi,vBiHLOADH,ᵫ⚪X9OA=6,AB=OC-26,
10ᑣtanZBOA=—,OA3NBOA=30°,.,.ZOBA=60°,ᵫḄឋKeNBiOB=NBOA=30=ZBOH=60°,(ᙠAHBIO,NBMO=NBAO<4Bஹ0H=4AB0,OB=OB/.AOB^AHBiO,.*.BiH=OA=6,OH=AB=2V3».•.EBiḄᙶ᪗*(-26,6),ᦑᫀ*(-266).EG#⚪ὃḄIZḄឋKஹÎᣚḄឋK¾¿ZḄឋKஹᐰQḄᑨ0ÁឋK0ᳮI⚪ḄᐵV.14ஹj=160-80x(0£r<2)ூ᪆᪷-ÑÒÓÔÕḄÖÀy(ᓟ )=»ᩭÛᙢḄÓÝ-ÑÒ?ÞḄÓÝᓽe.ூ#,••ÑÒḄß6I>ᙳ^80ᓟ .••á?ÞxâḄÖÀI80x,=ÑÒÓÔÕḄÖÀy=160-80x(09W2),ᦑᫀ*#j=160-80x(0^r<2).ூEG⚪ὃ᪷-ã▭⚪f0®å}ᦪḄ᪆æçᑮᡠéḄQéᐵêI⚪ḄᐵV.15ஹ35°ூ᪆ᑖ᪆#ᐜ᪷-Û4>?ᑁ┯iQ2N3,½᪷-ḄឋKᵨ/2=60-/3íᐭᦪ-a?ᓽe9.<#•.•ïḄÛ)mi>?Zl=25°,.,.Z3=Z1=25°,
11N2=60°-N3=60°-25°=35°.ᦑCᫀ 35.vwy⚪ὃzḄឋÄḄÅ Ḅឋ⚪Ḅᐵ.16ஹ75°ூ᪆ூᑖ᪆᪷;·¤oÆᏔÈbḄÉÊឋËcosAÆsinBḄoJÌËNAÆNBḄᦪᑭᵨḄᑁ7}ᳮË/CḄᦪ.1ᔊூVIcosA-----|4-(sinB———)2=0»22.._V2n••cosA—,sinB------922/.ZA=60°,NB=45:.ZC=180°-ZA-ZB=75°,ᦑCᫀ 75°.ூvwy⚪ὃzᱯÏḄÐᦪoÆÉÊᦪḄឋCy⚪ḄᐵËcosAÆsinBḄoÑ⌕cᡃÕÅÖ/$ᱯÏḄÐᦪo.17ஹ2ூ᪆ᑭᵨb×ØÙcᓽcCᫀ.ூ(6+6)(⌲-6)=(6)2_(6)2=5-3=2.ᦑCᫀ 2.ூvw¢⚪ὃzpÈ᪷ÙḄÜ◀¶g.¢⚪ᜧݸb×ØÙḄÞᵨ.ஹC⚪(ᐳ7⚪àᑖ69ᑖ)18ஹ(1)m=l(2)vPᙶ᪗ (-2m,1)ᡈ(6m,1).
12ூ᪆(1)ᐜ᪷-ðñò}ᦪḄ£ÊóEA(-4,-3),ᑭᵨô0êᦪõ2ðñò}ᦪḄ᪆æ*yὅ½ᵫðñò}ᦪ£Ê²EḄᙶ᪗ᱯø92yù⁐gy?Wû;ᯠc᪷-y,-y=4ᑡ2\Àÿ-==4,2ᓽmḄ(2)BDxE.᪷PBDḄ☢8ᑡPE=8,PE=4m,ᵫE(2m,1),Pᙠx ᓽPḄᙶ᪗.ூ#(1)$%&'ᦪḄ᪆*+y=m•••$%&'ᦪḄ-./0A(-4,-3),.*.k=-4x(-3)=12,...$%&'ᦪḄ᪆*+y= •.•$%&'ᦪḄ-./0B(2m,yi),C(6m,y?), 1:i1::••yi=TT=p12== Vyi-y2=4,:.T-T=4,:.m=l,/34 m=l5Ḅ ᦑmḄ1(2)BDxE,•.•B(2m,⎃) C(6m,) 0BஹCᑖ; ?ᚖ>@D,AD(2m,g),BDA-B •..PBDḄ☢8,
13ATBD*PE=8,. .ã• PE=8,:.PE=4m,*.E(2m,1),Pᙠx ,E⚪ὃHIJKLᦪM$%&'ᦪḄ᪆* $%&'ᦪ-. Ḅᙶ᪗ᱯOPQḄ☢ RSTU>Ḅ᪆*⚪ḄᐵW.19ஹ(1)([ 2[)(2)(x-V3)24-273;@-y/3G2Ḅ'ᦪ᪆* ᓽcAḄᙶ᪗(2)জᵫ(1)eG2Ḅ⊤g* ✌ᐜADḄ ᑭᵨkῪmḄឋocBD=AD=epqBḄᙶ᪗ rᐭᓽcঝᑖ;uNBAC=60w uNBAC=120wmḄ ᓽcmḄxz.ூ(1)•••{aᱥ>Gi#y=mx2+2/3(~ᵨ)ᔣ^_Gᓫ`cᑮaᱥ>G2,y•••aᱥ>G2#y=m(X—6)2+273 VAaᱥ>GiḄ⚔.AḄᙶ᪗+(G2).(2)জaᱥ>m>/-1ᡠ.•••Aaᱥ>⚔ .AB=AC.
14' ZBAC=90°,...AABC+kῪm :.CD=AD=5•••CḄᙶ᪗+ 2[ [.Cᙠaᱥ>G2 :. =m 2 62+26,c#m=.3ঝ᯿⚪- -2ᡠ.ᳮ#uNR4c=60w CḄᙶ᪗+ 6+1,6uN8AC=120w CḄᙶ᪗+ 6+3,6.V600G2 G+3,[ᙠaᱥ>G2 ,?+1-[+2>6\2»?G+3-~+2G<&¡⚪ὃH^_¢Ḅᙶ᪗£ᣚ ¥'ᦪḄឋo JKLᦪM¥'ᦪḄ᪆* kῪmḄᑨK§ឋo k
15¡Ḅᑨ}7ឋÅÖᙶ᪗ä3åvᙶ᪗Ḅfgb\y⚪Ḅᐵᑭᵨrᦪ⚔vᙶ᪗7åvᙶ᪗y⚪Ḅv.20ஹ(2)æçèÃ⚪᪆8(2)V3+V2.ூ᪆(2)évOêOM_LABëM,æç0ì=ᙊḄïðODᓽ8(2)évOêON_LBE,ᚖòN,¦óOF,ᑮX¡OMBNᙠõOBM3ᑭᵨÐᦪcOM7BMḄö÷ÌcBN7ONḄöᙠAONF3ᑭᵨøù}ᳮcNF,ᑣBFᓽc.ூ(2)évOêOM_LAB,ᚖòM.•••(DO|AC)ᑗëvD,AODXAC,.,.ZADO=ZAMO=90°.•.•ABC¡pZDAO=ZMAO,.*.OM=OD,AB|O)ᑗ8(2)évOêON_LBE,ᚖòN,¦óOF.TOBCḄ3v/.OB=2.ᙠõOBM3ZMBO=60°,...NMOB=30°,BM=-OB=2,2OM=6BM=üVBE±AB,pX¡OMBN.\ON=BM=2,BN=OM=V3.VOF=OM=73ᵫøù}ᳮNF=V2..•.BF=BN+NF=6+0.
16ὃv2.ᑗḄᑨ}|ឋ82.øù}ᳮ83.4.ýᔠ⚪.21ஹ(1)æçè᪆8(2)æçè᪆8(3)æçè᪆.ூ᪆(1)ᐜᑨ©ËN2+N3=90Yᑨ©ËN1=N2ᓽËÿ (2)᪷ῪḄឋᑮN3=NCOD=NDEO=60᪷ḄឋᑮN4=N1,᪷ᐰḄឋᑮNCBO=NCDO=90ᑮ (3)ᐜᑨAABOgZkCDEAB=CD,ᓽ ᑨ ABCD ᨬᑨCD=ADᓽ .ூCDḄᑗ.,.OD±CD,.*.Z2+Z3=Z1+ZCOD=90°,VDE=EC,.•.N1=N2,.*.Z3=ZCOD,.♦.DE=OE(2)VOD=OE,OD=DE=OE,:.Z3=ZCOD=ZDEO=60°,N2=N1=3O°,VAB/7CD,/.Z4=Zb
17/.Z1=Z2=Z4=ZOBA=30°,.,,ZBOC=ZDOC=60°,OD=OBᙠACDOACBO¢ ZDOC=NBOC,OC=OC/.CDO^ACBO(SAS),.,.ZCBO=ZCDO=90°,OB_LBC,.••BCOOḄᑗ>(3)VOA=OB=OE,OE=DE=EC,.•.OA=OB=DE=EC,TAB#CD,.•,Z4=ZL.•.N1=N2=N4=NOBA=30 /.ABO^ACDE(AAS),.*.AB=CD,•••©ªABCD^«©ª :.ZDAE=-NDOE=30 2.*.Z1=ZDAE,.*.CD=AD,A°ABCD¬.ூ®¡⚪B⌕ὃHIᑗ>Ḅឋo Ḅ±@k kῪḄឋo ^«©ªḄᑨK§ឋo ¬ḄᑨK ᑨ²ABO^ACDEE⚪ḄᐵW.22ஹ(1)³´᪆(1)জ³´᪆ঝ1ঞ"+I.4ூ᪆(1)µ⌕¶·¸BAEg4CDEᓽ(1)জᑭᵨ(1)eAEBCkῪm ᪷ASAᓽ¶·ঝ᪀º¥'ᦪ ᑭᵨ¥'ᦪḄឋoᓽ»¼⚪ঞ-3¢ 18'ᦪḄKÀᓽ»¼⚪.ூ³(1)¶·#-1¢ •••©ªABCDÁ /.AB=DC,NA=ND=90,AD¢ /.AE=DE,/.BAE^ACDE,.*.BE=CE.(1)জ#-1¢ ᵫ(1)e ¸EBCkῪm,.*.ZEBC=ZECB=45O>VZABC=ZBCD=90°,.,.ZEBM=ZECN=45°,VZMEN=ZBEC=90°,.*.ZBEM=ZCEN,VEB=EC,/.BEM^ACEN©,."BEM^ACEN,/.BM=CN,BM=CN=x,ᑣBN=4-x,.*•SABMN=—,x(4-x)="—(x-1)1+l,22
191.,--<0,2.♦.x=l#ABMNḄ☢%ᨬᜧᨬᜧ'(1.ঞ*+-3/0EH_LBGH.1NG=m,2!JBG=lm,BN=EN=6m,EB="m.VSABEG=- EG BN=- BG EH,22.ಗn?3*/m_3+6••HH4---------------=------m92m23+V3ᙠRtAEBH/sinNEBH=EH_2_+.EBRm4ூ9:<⚪ὃ? @ᔠ⚪ஹCḄឋஹῪDḄᑨEFឋஹᐰḄᑨEFឋஹGHIᣚஹ┦LᦪNO*⚪ḄᐵQRSTUᐰ*VW⚪XYZ[\ᵨ^_XYᑭᵨaᦪ*VW⚪1323(1)Ã(2)—216ூ᪆(1)ᵫ⚪cNᐳᨵ4f gḄhijᑮklmnḄhᨵ2fᑣP(ាrjᑮklmn)=-.2(2)ᵫ⚪c tḄᡠᨵ gឋ+(A,A)ஹ(A,B)ஹ(A,C)ஹ(A,C)ஹ(A,A)ஹ(A,B)ஹ(A,C)ஹ(A,C)ஹ(B,A)ஹ(B,B)ஹ(B,C)ஹ(B,C)ஹ(C,A)ஹ(C,B)ஹ(C,C)ஹ(C,C),ᵫv⊤ NjᑮḄxymnᐳᨵ16f gḄhizyklmnzy{|mnḄhᨵ3fᑣP(j
203ᑮÃÄÅÆÇ ÃÈÉÆÇ)=—16ὃ#ᑡ⊤MÍ-Mᭆ᳛Ð*.,ஹ5* ஹ201724ஹ(1)——V3(2)----42018ூ᪆(1)᪷ÖᦪᢣᦪÙஹ¥᪷*ஹÚᢣᦪÛ§ᱯÜḄ'ᦪPÝE⚪;(2)᪷ᑖ*ḄßM§◀MPᓄâ⚪ã¢Ḅ*Ç ᯠ`{xḄrᐭᓄâ`Ḅ*ÇᓽÝE⚪.ூ³#(1)5*-2V3+l+2x—4-2^+I+^4-^42(x—l)(x+1)—x(x—2)+1)2(2)5*=x(x+l)2x-\x2-1-x2+2x(x+1)2x(x+l)2x-l2x—1(x+l)2x(x+l)2x-lx+1Xஹ„Q-2018+12017ux=-lw 5*=---------=-------20182018ூ®E⚪ὃHᑖ*ḄᓄâஹéஹÚᢣᦪÛஹÖᦪᢣᦪê§ᱯÜḄ'ᦪ ÝE⚪ḄᐵW·SëìᔜîḄïðM.
