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ᓝᐗᕜᕜ121.1 ᐗ1.ᑡᐵXḄ ᐗḄ12A.x2+—=0B.crx2+bx+c=0^C.(x+l)(x-2)=1D.3x2-2xy-5y=02.3f—5=4xᐵஹbஹcḄḄA.a=3,b=4,c=-5°B.a=3,b=-5,c=4C.a=-3,b=Y,c=—5b°D,a=3,b=-4,c=-53. ᐗ4x?-3x-5=0Ḅ ⚗ᦪA.—56°B.46°C.-36D.34.(m-2)x2+3mx+l=0ᐵxḄ ᐗᑣA.m^±2oB.m=2oot>«>c.m=-2D.mr25.ᑡ ᐗḄA.2x-3y+1aB.3x+y-zC.x-5x=loooooooD.x+2y=16. ᐗ2/-5x-4=0Ḅ⚗ᦪஹ ⚗ᦪᦪ⚗ᑖ A.2,5,-4»B.2,5,4C.2,—5—4ooooD.2,—5,47. x(x+2)=5xᓄᡂ !"ᑣaஹbஹḄ#ᑖ A.1,3,5coB.1,-3,000C.-1,0,5D.1,3,08. ᐗ2x2-3*=1Ḅ⚗ᦪ ⚗ᦪb$ᦪcᑖ A.a=2,b=3,c=-lB.a=2,b=l,c=-3C.a=2,b=-3,c=-l»oo»D.a=2,b=-3,c=19. ᐗ(x+2)2-x=3(/+2)ᓄ% !&",(Ḅ ⚗_,ᦪ⚗.10.*m=+ᐵxḄ-2)XMJ2+2X_1=O ᐗ.11.-.ᐵXḄ/ 3%+"=0Ḅ 0᪷1,ᑣ2=.
112.ᐵxḄ ᐗ(”+1*+;+2=1Ḅ 0᪷0,=nḄ#.•@ஹAB;13.ᐵxḄ ᐗ(«-l)x*2+x+H-1=0Ḅ 0᪷0,=IᦪaḄ#.14.P(m-l)x'"3-(m+l)x-2=0. ᐗᑣmḄ#%A.0meB.±looooC.l®*0D..-115.☢ᐵxḄ`@ar2+x+2=0;03(x-9)2-(x+l)2=leঞx+x='e(4)Xx2-a=0(%hiIᦪ)eVx+T=x-1. ᐗḄ0ᦪA.lo©®B.2o©ooc.3D.416.-.ᐵxḄx2-kx-6=0Ḅ 0᪷%x=3,ᑣIᦪkḄ#%A.1B.-1C.2oD.-217.ᐵxḄ(a++o-1=o ᐗᑣ2=.18.-./-2-qr+1=0ᐵxḄ ᐗsIJk%____________.2————19.x ᐗf—3x-3=0Ḅ 0z{|}ᦪ"2/ 6-8Ḅ#%20.J.2f+x-1=0Ḅ᪷ᑣ"L4+2ᶭ+2017Ḅ#%.21.ᐵxḄx2+5x-m=0Ḅ 0᪷2ᑣm=.22.P ᐗax2-bx-2017=0ᨵ ᪷%x=-l,ᑣa+b=.23.ᐵxḄ ᐗ(a-1)x2+x+(Q2_1)=oḄ 0᪷0,ᑣaḄ#
224.-.ᐵxḄ ᐗ(+c)x?+26x+(a-c)=0,ᐸaஹbஹcᑖ %ABCḄ.xx=-lḄ᪷ᑨABCḄ&ᳮᵫ.25.(2016)ᨵxᳫᳫᐳq45 ᑣᑡᔠ⚪iḄA=45B¡x(x+1)=45C.x(x-1)=45»»D.x(x+1)=452226.(2016ᑁℳ¤ᒹᜮ)PᐵxḄx2+(m+l)x+g=0Ḅ 0Iᦪ᪷Ḅ᎔ᦪា(©ªᑣḄ#A.2018B.2008C.2014D.20121.ூ¬ᫀCூz᪆A,ᑖ"ᦑ±⌱⚗┯´;B,*0+ ᐗᦑ±⌱⚗┯´;C,
3 ᐗᦑ±⌱⚗eD,ᐗᦑ±⌱⚗┯´.ᦑ⌱C.2.ூ¬ᫀDூz᪆3d—5=4xµᓄ%:3--4¶—5=0,ᦑa=3,6=T,c=-5.ᦑ⌱D.3.ூ¬ᫀCூz᪆ ᐗ4xL3x-5=0Ḅ ⚗ᦪᓽ-3xḄᦪ-3,ᦑ⌱C.4.ூ¬ᫀDூz᪆᪷¸ ᐗḄᭆºµ.m-2w0,z»mw2.ᦑ⌱D.5.ூᫀCூ᪆᪷ᐗḄᭆᨵ ᦪ ᦪḄᨬᦪ!2Ḅ"ᐗ#$.A&'┯)*B'+ᐗ┯)*C,-*D'ᐗ┯).ᦑ⌱C.6.ூ¬ᫀCூz᪆Ḅ⚗ᦪஹ ⚗ᦪᦪ⚗ᑖ 2,-5,-4.ᦑ⌱C.7.ூ¬ᫀBூz᪆V.x(x+2)=5x,.*.x2+2x-5x=0,.".x2-3x=0,/.a=l,b=-3,c=0.ᦑ⌱B.8.ூ¬ᫀCூz᪆BXZTX=1,.2X2-3X-1=0,.•.⚗ᦪaஹ .⚗ᦪb$ᦪcᑖ 2ஹ—3ஹ,—1.ᦑ⌱C.9.ூ¬ᫀ-2#+3;-2=0,3x,-2.ூz᪆(x+2)2-x=3(f+2)µᳮ%`x1+4%+4-x=3x2+6,x2-3x2+4x-x+4-6=0,ᓽ-2x2+3x-2=0,᪷¸ ᐗḄ !"ox?+6x+c=0(ax0)µ»½ ᐗḄ !"%-2*2+3x-2=0,(Ḅ ⚗3x,ᦪ⚗%-2.ᦑ¬ᫀ%:-202+3X-2=0,3X,-2.10.ூ¬ᫀ-2ூz᪆ᵫ22-2=2»=12,¾`2W0,..¿=—2.11.ூ¬ᫀ2ூz᪆•.,ᐵxḄ9 3À+=0Ḅ 0᪷1,e.1 3+%=0.•.m 2=0tn=2.12.ூ¬ᫀn=l
4ூz᪆•.•ᐵxḄ ᐗ(+1)x2+x+n2=lḄ 0᪷0,0+0+"2=1,n=±l,'.'n+17^0,n=1.13.ூ¬ᫀ-1ூz᪆•.•ᐵxḄ ᐗ(-1*+ᑘ|-1=0Ḅ 0᪷0,⚗ᦪa-1^0.ÃÄx=0}ᐭ(-1)/+ÆÇ-1=0,ᡂÈᓽ”1,Ã|0| 1=0,4=-1.@~AÊ<14.ூ¬ᫀDூz᪆-.(m-1)/Ì-(Í+1»-2=0 ᐗ᪷¸ ᐗḄÎϵ»“P+1=2Ãm-1H0,e.=1Ãmwl,/.m=-l,ᦑ⌱D.15.ூ¬ᫀBூz᪆জḄÑ#ÒÎa=0+µᓄ%x+2=0,ᦑÒ Î ᐗeঝµᓄ%2W-56x+241=0,ᔠÎÏ ᐗeঞÒ"ᡠÕÒ ᐗeট×%%hiIᦪÒØ.ᦪᡠÕᔠÎÏ ᐗeঠÚᨵ᪷ÌÒ"ᡠÕÒ ᐗ.ÛÜঝট ᐗᦑ⌱B.16.ூ¬ᫀAூz᪆ x=3}ᐭ/—ஹx-6=0»9-3Ý-6=0,3-3=0,3*=3,4=1ß⌱A.17.ூ¬ᫀ3ூz᪆᪷¸⚪i»,|m-l|=2,Ãm+l/O,z»:m=3,Ḅ#%3.18ூ¬ᫀ-2ூz᪆-.+ᐵxḄ ᐗµ»ߟ2=2,1-ki0,2z»k.=-2.19.ூ¬ᫀ-2ூz᪆ 4}ᐭ9-3%-3=0»a2-3a-3=0,/.20^60-6=0,2a2-6a=6,2,—6“ 8—6—8=—2.20.ூ¬ᫀ2018
5ூz᪆’.'m%*2+x-1=0Ḅ᪷.,.m2+m-l=0,m2+m=l,.m3+2m2+2017=m(m2+m)+m2+2017=m+m2+2017=1+2017=2018.ᦑ¬ᫀ%`2018.21.ூ¬ᫀ14ூz᪆ x=2}ᐭ+5*-/77=0µ»4+10-m=0,z»m=14.22.ூ¬ᫀ2017ூz᪆ x=-1}ᐭax2-bx-2017=0»a+b-2017=0,e.a+b=2017.23.ூ¬ᫀூz᪆•••ᐵxḄ ᐗ(a-l)x2+x+(a2-l)=0Ḅ 0᪷0,e.x=0äå½a-l*0.Aa2-1=0o*l.z»a=-l.24.ூ¬ᫀACæῪè&.ூz᪆ACæῪè&.ᳮᵫ`Ḅ᪷(AC)X(-1)é2ᓣ(”)=0,ë.a+c-2ì"O-cH),ë.iHAO,ᵨ^,.,.A3Cæᨴ⌕è&.25.ூ¬ᫀAூz᪆ᵫ⚪i.ôᐸõḄ(x-1) ᑣ(X-1)Ãhö÷ ᦑᦪ;¶(x-l),1x(x+1)=45,ᦑ⌱A.26.ூ¬ᫀCøz᪆᎔ᦪæ(©ªḄᦪ±1,ᓽ½Ḅ᪷X=1ᡈx=-l. X=1}ᐭú»1+(%+1)+e=0,z»ü=-|e x=-lx=l}ᐭú»l-(?+l)+g=0,z»7=Lᦑ⌱C.2
6 ᓝᐗᕜᕜ2ஹ⌱2⚪41.ᐗx(x-2)=0᪷Ḅ56'()A.ᨵ9&:;Ḅ<ᦪ᪷B.ᨵ9:;Ḅ<ᦪ᪷C.=ᨵ<ᦪ᪷D.?ᨵ<ᦪ᪷2.@ b<0,ᐵBxḄᐗ(x-1)2=bḄ᪷Ḅ56'()A.ᨵ9&:;Ḅ<ᦪ᪷B.ᨵ9:;Ḅ<ᦪ᪷C.?ᨵ<ᦪ᪷D.ᨵ9<ᦪ᪷3.@ ᐵBxḄᐗ(x+1)2-m=0ᨵ9<ᦪ᪷ᑣmḄDEG'()3A.m2-----B.m20C.D.m2244.ᐵBxḄᐗk/-x+1=0ᨵ9&:;Ḅ<ᦪ᪷ᑣkḄDEG'()A.k<—B.k>LC.kVHIkJD.k>KIk/4444ஹMN⚪5.ᐗ,x2+x=3Oa=,b=,c=,ᑣḄ᪷'6.Qx1,X?ᑖS'x?-3x+2=0Ḅ9᪷ᑣX1+x2=.7.@ +TU9VW'X2-5X+6=0Ḅ9᪷,ᑣ+TUḄ +VcḄDEG'—8.@ ᐵBxḄᐗ(k+1)x2-2x-1=0ᨵ9&:XḄ<ᦪ᪷ᑣkḄDEG'.9.ᑏZᐗ,[\ᨵ9&:;Ḅ<ᦪ᪷.10.ᐗx2+x+[=0᪷Ḅ56'_____.411.QᐵBxḄax(a+2)x+a=0ᨵ<ᦪ^_<ᦪaḄDEG'.12.@ `ᦪa7x(x+5)b`ᦪa-6x=37x-9ḄEd!:eᦪᑣ.13.@ fᦪy=-x+4beghfᦪiHᙠXkTᙶ᪗nᑁḄpq?ᨵrsᑣkXḄDEG'.
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Ḅᕜ6ᡈ10ᡈ12.ூᑖ᪆&⌕ Ḅᐵ<ᔲ᪀ᡂ .ஹ⚪21ஹூᫀ}......☄64⚞%⚞(...¢=ᔁ⍷Ὺ-ᑖூ᪆ூᑖ᪆[2t+3whmi.22ஹூᫀ¥1 }...nmA*,4ூὃ#ᐗ%-ᑖூ᪆ூᑖ᪆¥1 ᑭᵨᓝSM_`ᑖ.¥2 ¦=§~w_`hi_`ᑖ.¥3 ᑭᵨ{i_`ᑖ;4 I~w_`ᑖ. 2623ஹூᫀ}©ᐭ@(@:©ᐭ@A.-.▏=2”¬—3,¯ᦪ°±²³´ᑵ@¶·¸ᑴ,4•••Ḅ®᪷-2;j©ᐭ...Ḅ®᪷-5.4ூὃ#%ᐗ(ᐗ%Ḅ(ᐗ%-ᑖூ᪆ூᑖ᪆ᐜ᪷⚪»ᑡ½ᐵ ■Ḅ%ᐗ(t@¾ᙌḄÀ(Áᐸ©ᐭᡠᑭᵨᑖ_`tᓽZ.24ஹூᫀ:ÄÅᙊ ÇᙢḄÈÉr,᪷⚪»@}ÊᔠᱥÍÎ"Åᙊ ÇᙢḄÈÉ5m.Aூὃ#ᐗ%-ᑖ(ᐗ%ḄÐᵨூ᪆ூᑖ᪆<᪷▭Ò⚪ᑡ(ᑭᵨ{_`ᑖt(ÓÔ_`mÕ.25ஹூᫀপ}×ᱏᒕÙÚᑖḄ☢}ÛÜ,(2):+a=6,b=4,(᪷⚪»ᨵ}ᓽ...ÝÞḄF Ḅß.ூὃ#ᐗ%-ᑖAூ᪆ூᑖ᪆<᪷▭Ò⚪ᑡ,ᑭᵨ{_`ᑖt(ÓÔ_`mÕ. 27 28 ᓝᐗᕜᕜ5ᐗḄ᪷bnᦪḄᐵnஹ⌱2⚪¥ᐳ5⚪,Þ⚪3ᑖᑖ15ᑖ¦1.@ ᐗ4X?-3x-1=0Ḅ9᪷ᑖS'0ஹx,ᑣx/xz+xix??ḄE!¥à2A.-3B.3©C.-6D.62.@ aஹB'2x?-3x-1=0Ḅ9<ᦪ᪷ᑣ¥a-2B-2ḄE'¥¦A.—B.—C.3»D.—2223.×aஹb'x2+x-2014=0Ḅ9<ᦪ᪷ᑣa?+2a+bḄE!¥ A.2014B.2013oC.2012D.20114.ÔßàXᐗÔá┯⚗nᦪ$9᪷!2,-3,âàá┯ãᦪ⚗┯9᪷!-2,5,^_¢!¥àA.X2-3X+6=0B.x2-3x-6=0C.x2+3x-6=0D.x2+3x+6=05.ᐵBa49x2-98x-1=0ḄᑡäÜὅ,-¥àA.B.ᨵ9,᪷C.ᨵ9æ᪷D.ᨵ,᪷çæ᪷ஹMN⚪¥ᐳ8⚪Þ⚪3ᑖᑖ24ᑖ¦6.×x”x?'4x?+3x-2=0Ḅ9᪷èl]x|+Xz=,x,x=.27.QᐵBxḄ2x2-mx+n=0Ḅ9᪷!-3ß4,ᑣm=,n=.xxi98.@ Xiஹx2'2x?+14x-16=0Ḅ9<ᦪ᪷^_-+---ḄE!.X1x29.×x”X2'ᐗx2+5x-3=0Ḅ9᪷,I2x,x2+6x-3+a=4,ᑣa=.2210.×a,B'ᐗx2+3x-7=0Ḅ9᪷,ᑣa2+4a+[3=.11.QᐵBxḄ--5x+k=Ḅ᪷'ᑣ᪷',k=.12.QᐗḄ9᪷ᑖS'RtAABCḄ9ᩩkTVW,IS^BC=3,ëᑏZìᔠ⚪ªḄᐗ.13.Qx?-kx+6=0Ḅ9᪷ᑖSgx2+kx+6=0Ḅ9᪷ᜧ5,ᑣkḄE' 29+.⚪414.&,ᑏZḄ9᪷ïßb9᪷ïð:(1)3X2+2X-3=0(2)X2+X=6X+7.15.@ <ᦪa,bᑖSña2-6a+4=0,b?-6b+4=0,Iaòb,e+óḄE.ab16.@ ᐵBxḄᐗx2=2(1-m)x-n?Ḅ9<ᦪ᪷!x“x2(1)mḄDEG*(2)×y=X|+x2,·yD$ᨬE:ômḄEõZᨬE.17.@ ᐗX?-2x+m=O.(1)Qᨵ9<ᦪ᪷,mḄG*(2)QḄ9<ᦪ᪷!®,x,Ix#3x2=3,mḄE.218.ᐵBxḄᐗx?-(m-3)x-m2=0.(1)Ô4ᨵ9&:;Ḅ<ᦪ᪷*(2)×Ḅ9<ᦪ᪷!x±X2,I|x"=IX2I-2,÷ḄEçḄ᪷.ὃᫀb¡⚪᪆ 30ஹ⌱2⚪¥ᐳ5⚪Þ⚪3ᑖᑖ15ᑖ¦1.@ ᐗ}X?-3x-1=Ḅ9᪷ᑖS'X1ஹX2,ᑣX}X2+X1X2?ḄE!¥ A.-3B.3C.-6D.6ூ :"#ᐗ%&'(:xJ3x-1=0Ḅ9᪷ᑖS'.ஹx,2.'.X!+X=3,X1>X=-122t.'.X2X2+XX2=XX2>xi+x=-1X3=-3.11212ᦑ⌱A.2.@ aஹB'2x2-3*-1=0Ḅ9<ᦪ᪷ᑣ¥a-2¥P-2ḄE'¥à1130-3AA.——BD.C.3D.222ூ4!aஹB'2x2-3x-1=0Ḅ9<ᦪ᪷ᡠa+B=|,aB=-*,°!¥a-2B-2=a[3-2a+Pà+413=---2X—+4221=~'2'ᦑ⌱A3.×aஹb'x?+x-2014=0Ḅ9<ᦪ᪷ᑣa2+2a+bḄE!¥¦A.2014B.2013»C.2012D.2011ூ4a'x2+x-2014=0Ḅ<ᦪ᪷.,.a2+a-2014=0,/.a2+a=2014,¢a=214+a+b,.aஹb'x2+x-2014=0Ḅ9<ᦪ᪷.'.a+b=-1, . ¢a2014-1=2013.ᦑ⌱B. 314.ÔßàXᐗÔá┯⚗nᦪ$9᪷!2,-3,âàá┯ãᦪ⚗┯9᪷!-2,5,^_¢!¥àA.X2-3X+6=0B.X2-3X-6=O»C.X2*3X-6=0»D.X2+3X+6=Oூ4Ôá┯⚗nᦪ$9᪷!2,-3,9᪷ïð,-;àá┯ãᦪ⚗,┯9᪷!-2,5,9᪷ïß,-ᦑ×'ᐗḄ9᪷'aஹJ,#$4a•p=-6,a+0=-3,^_aஹ!9᪷Ḅᐗ¿'x*-3x-6=(ᦑ⌱:B.5.ᐵBa49x2-98x7=0ḄᑡäÜὅ,-¥àA.B.ᨵ9,᪷C.ᨵ9æ᪷D.ᨵ,᪷çæ᪷ூ:ᵫᑨSaµú¥¦, ᨵ9&:;Ḅ<ᦪ᪷°ᵫ᪷bnᦪḄᐵn X]+X2=-Xi X2=^=-Trᡠᨵ,᪷çæ᪷.ᦑ⌱D.'MN⚪¥ᐳ8⚪Þ⚪3ᑖᑖ24ᑖ¦6.×X”x?'4X2+3x-2=0Ḅ9᪷ᑣx+x=-,x1xà=-(.74-2-ூ4xτ,x2'4x2+3x-2=0Ḅ9᪷ᑣx,+x2=ᔁ,X[x2=-ᦑᫀ!4-ក-1427.QᐵBxḄ2x2-mx+n=0Ḅ9᪷!-3ß4,ᑣm=2,n=-24.ூ:ᵫ᪷bnᦪḄᐵn$-3+4ᔁ¥-3X43$4m=2,n=-24,ᦑᫀ!42,-24. 32cx2x1AR8.@ X1ஹX2'2x+14x-16=0Ḅ9<ᦪ᪷^_---+---ḄE!—&ýx82ூ4 þஹx2'2x?+14x-16:0Ḅ9<ᦪ᪷ • ᪷ÿ ᳮ,X1+X2=-7,x1•x=-8,2.x2^xl_72-2X(-8)_65X[x-882ᦑᫀ-.O9.X=2ᐔ(+5x-3=0Ḅ᪷2x1(x22+6x2-3)+a=4,ᑣa=10.ூ .X2ᐗx2+5x-3=0Ḅ᪷.'.X2+5x-3-0,22,•X2-I-5x2-3,2(X2+6x-3)+a=4,22.■!1”2+a=4,• x1,X2ᐗX2+5X-3=0Ḅ᪷,,,xjx?—_3,.'.2X(-3)+a=4,••a=10.10.a,Bᐗx?+3x-7=0Ḅ"᪷ᑣaZ+4a+B=4.ூ }a,Bᐗx?+3x-7=Ḅ"᪷a+P=-3,a(3a-"7=0,a(3a=7,a2+4a+B=a(3a+a+B=7-3=4,ᦑᫀ%4.11.&ᐵ(xḄ(-5x+k=0Ḅ"᪷0,ᑣ)"᪷5,k=0ூ :Ḅ)"᪷%t,᪷+⚪-.0+t=5,0*t=k, 33ᡠ!t=5,k=0.ᦑᫀ%5,0.12.&"ᐗḄ"᪷ᑖ1RtAABCḄᩩ3456S=3,7ᑏ9AABC":ᔠ⚪-ḄᐗX?-5x+6=0(ᫀ=>).ூ .• "ᐗḄ"᪷ᑖ1RtaABCḄᩩ3456..ᐗḄ"᪷Ḅ@A%3X2=6,...BC!%x2-5x+6=0,ᦑᫀ%:x?-5x+6=0(ᫀ=>).13.&x?-kx+6=Ḅ᪷ᑖ1Dx2+kx+6=0Ḅ᪷ᜧ5,ᑣkḄF5.ூ x?+kx+6=Ḅ᪷ᑖ1%aஹb,ᑣx?-kx+6=Ḅ᪷ᑖ1%a+5,b+5,᪷+⚪-.a+b=-k,a+5+b+5=k,ᡠ!10-k=k, .k=5.ᦑᫀ%5.H. ⚪14.= ,ᑏ9Ḅ᪷IJK᪷IA(1)3X2+2X-3=0(2)x2+X=6X+7.ூ (1)x“X?ᐗḄ᪷9ᡠ!Xj+x=,x,x=-1.22o(2)ᓄ%MN%x2-5x-7=0,OX?ᐗḄ᪷ᡠ!x+X=5,XX=-7.121215.PQᦪa,bᑖ1STa?-6a+4=b2-6b+4=0,a*b,UV+^ḄF.ab 34ூ a2-6a+4=0,b2-6b+4=0,aYb,Z.a,bC[\x?-6x+4=0Ḅ᪷,.,.a+b=6,ab=4,...]N=^+ᓃ2(a+b)2-2ab=62-2X4=7abab416.Pᐵ(xḄᐗx2=2(1-m)x-n?ḄQᦪ᪷%xrX2পUmḄaFcd(2)y=X1+x2,eya.ᨬgFhUijmḄFkU9ᨬgF.ூ }(1)l]ᳮ%x?+2(m-1)x+m2=O.•..]ᨵ"Qᦪ᪷.♦.j=[2(m-1)o-p=-8m+420,.mW—;2(2)'.,Xj,x2^3ᐗxJ2(1-m)x-m2,ᓽx?+2(m-1)x+mJḄ᪷,.,.y=x+x=-2m+2,l2rsytmḄuᜧsvg,ᦑem=[h,a.ᨬgF1.17.PᐗX2-2X+m=0.(1)&ᨵ"Qᦪ᪷UmḄcd(2)&Ḅ"Qᦪ᪷%X,,x2,X,+3X=3,UmḄF.2ூ (1)\.x2-2x+m=0ᨵ"Qᦪ᪷.•.j=(-2)2-4m20, .mW1;(2)ᵫ᪷ᐵxC,xi+xz=2,Xi X2=m,x[+x2~2 yiX+3X=3,123 .11X2W 35••m-xi•xo——.418.ᐵ(xḄᐗx2-(m-3)x-m2=0.(1)z{|ᨵ"=i}ḄQᦪ᪷dফ"Ḅ"Qᦪ᪷%1x/=|xzl-2,UmḄFḄ᪷.ூ G)ᐗ(-(m-3)x-m2=0,,/a=1,b=-(m-3)=3-m,c=-m2,j=b2-4ac—(3-m)2-4X1X(—m2)=5m2—6m+9-5(m——)55.'.j>0,ᑣᨵ"=i}ḄQᦪ᪷dফxx2=--m?WO,xi+x2=m-3,a0,Xi,X2"*5"»X|xI|=|xI-2,BDlxj-|xl=-2,22&Xi>0,X2<0,Nᓄ.:Xi+xz=-2,.'.m-3=-2,ᓽm=1,ᓄ%x?+2x-1=0, .X1=-1+X2=-1-&XiVO,X2>0,Nᓄ.-(XI+X2)=-2,.'.x+x=m-3=2,ᓽm=5,12ᓄ%x?-2x-25=0, .XF1-V26,x=1+-^26.2 36ᓝᐗᕜᕜ6ஹ⌱ä⚪(å⚪3ᑖ(ᐳ30ᑖ)1.èé1ᐵ xḄᐗ%(m-1)x2+x+1=0Ḅ᪷,ᑣmḄÀ()A.1B.-1C.0D.óG&2.ôᐵ xḄᐗ%Ḅ᪷õ=1,X2=2,ᑣ÷()A./+3X-2RB.x2-3A;+2=0C./-2x+3=0D.x?+3x+2=03.ᐗ%(x-2)=x(x-2)Ḅ()A.x=\B.x=0C.XI=2,X2=0D.X,=2,X2=l4.ôᐵ xḄᐗ%(k-1)x2+2x-2=0ᨵ-Mᦪ᪷,ᑣkḄmÀý()A.k>1B.k^-C.k>Lk#1222D.k/k25.ᵨᐗW+4x-5=0, !"#()A.(x+2)2=9B.(x-2)2=9C.(x+2)2=1D.(x-2)=16.+ᑡᐵ.xḄᨵ1ᦪ᪷Ḅ4()A.x2-^r+l=0B.x+x+1=0C.(x—1)(x+2)=0D.(x—1)'+1=07.;<=2011>?<@A#100ᔴC2013>?<@A#144ᔴ,EF<=?<@AḄ>GᙳIJ᳛.LF<=?<@AḄ>GᙳIJ᳛#x,ᑣ᪷N⚪Pᑡ#()A.144(1-x)2=100B.100(1-x)2=l44C.144(1+x)2=100D.100(1+X)2=1448.ᐗx?+px-2=0ḄT᪷#2,ᑣpḄU#()A.1B.2C.-1D.-29.ᐵ.xḄᐗx2+2(m-l)x+m2=QḄWT1ᦪ᪷ᑖY#x,x2|+X2ு0,x,x>0,ᑣmḄ]U_4()2A.B.mW`mWOC.m 37m-,n=.13.tuᐵ.xḄ/-4x+a=0ᨵWTyzḄ1ᦪ᪷CᑣḄU4.14.tuᐗ2d-3x-l=0ḄW᪷#|x,,ᑣ,=□x215.(1),ᙠ#20m,J#32mḄ"ᙢz᪵Ḅᩩ⍝(ᔣᔣᚖ)Cᙢᑖᡂe"ᙽC#ᵪCᎷLᵪ☢#570mᑐE⍝#¢£¤L#xm,¥(2)Ḅ¦ὃ¨©ªᑡ©Ḅ4.(1).(2)16.tuᐵ.xḄᐗ(«-1)/+¬+1=0ᨵ1ᦪ᪷CᑣmḄ]U_4.ஹ⚪(ᐳ112ᑖ)17.(ᐳ24ᑖCr⚪6ᑖ)+ᑡᐗ.(l)x2-5x+l=0®(2)3(x-2)2=x(x-2).(3)x2+2x=0(4)3x2-6x+2=018.(12ᑖ)ᙠ1ᦪ_ᑁ°±²³´µ“·”Cᐸºᑣ#»a·¼½/,᪷N¾Tºᑣ»(1)E443ḄU®(2)E(x+2)¿xḄU. 3819.(12ᑖ)tuxi=-l4/+-5=0ḄT᪷CEmḄUÁḄÂ᪷Xo220.(12ᑖ)tuᐗ--2%+=0.(1)eᨵWT1ᦪ᪷CEmḄ_®(2)eḄWT1ᦪ᪷#ÅC/C᳝+3=3,EmḄU21.(12ᑖ)tuᐵ.xḄX?-(m+2)x+(2m-1)=0.(1)EÈ»ឤᨵWTÊyËḄ1ᦪ᪷®(2)e ḄT᪷41,ÌE©ḄÂT᪷wmḄ]U 3922.(12ᑖ)2uᐵ.xḄx2(Ḅx+k2=0ᨵWT1ᦪ᪷Xi,X2.(1)EkḄ]U_®ফeÎ+*2Ð%EkḄU.23.(12ᑖ)tuᐵ.xḄᐗ-=(2"+1»-+2ᨵWT1ᦪ᪷#*1CX2.(1)EkḄ]U_®(2)Ly=xi+x2,Ôy]ÕᨬU×,EyØkḄU,ÙE©ᨬU.24.(14ᑖ);ḕ#ÛÜÞᵨ?ß⚪Cḕàáâãᐳᢗå10æᐗçᔜéḄÜÞᵨ?Ḅ“ᦋ?`”ëì°íîḄ⊡ð.2012>CAéᙠḕàá⊡ðḄñẠᢗᐭ600ôᐗᵨ.“ᦋ?`”Cõᑜì÷r>ìyzḄIJ᳛ᢗåC2014>Féõᑜᢗå“ᦋ?`”864ôᐗ.(1)EAéᢗå“ᦋ?`”Ḅ>GᙳIJ᳛®(2)¥2012>ᑮ2014>,Aé>ᐳᢗå“ᦋ?`”¢£ôᐗ¤ 40jᓝúûᦪᕜᕜý1ஹ⌱n⚪(r⚪3ᑖCᐳ24ᑖ)1.ᵨþûᦪy=3x2—4x-2ᑏᡂy=a(x+m)nḄᑣmஹnḄᑖ()210210A.m=—,n=——ooB.m=--,n=-----»C.m=2,n=60D.m=2,n=-233332.ᱥy=-2X2+12X-13,ᑣᑡᐵᱥ Ḅ()A. ᔣ,!"#$%x=-3B.⚔'ᙶ᪗$(-3,5)C.ᨬ+$5D.,x>3-y.xḄ/ᜧ12+3.456+ᳫ820m/sḄ9:;%ᔣ<=>?ᙠABḄC:h(m)D-Et(s)FGᐵH:h=20t-5t2.,h=20m-+ᳫḄJK-E$()A.20sB.2s0(272+2)s.(20-2)54.MᱥDx#ḄN6O'A(-3,0),B(1,0),ᑣᵫMQRy<0-,xḄSU()A.-3 41ᐸB v⚪Ḅ6ᦪA.16oB.26C.36D.46pஹA⚪+⚪4ᑖᐳ16ᑖ9.~2x2—5x+2=0Ḅ᪷$xi=-,X2=2.pqrᦪy=2x2-5x+2Dx#ḄO'______210.ᱥy=2x2+x-3DX#O'6ᦪ$6.11.pqrᦪy=-x2+2x+mḄkᑖMQMᡠ\ᑣᐵxḄ5ᐗpq~4+2x+m=0Ḅ$.12.ᙠpqrᦪy=x?+bx+cBrᦪyDxḄkᑖ!⊤:X-2-101234y72-1—2m27ᑣmḄ$.tஹ⚪ᐳ60ᑖ13.15ᑖM,ᱥyi=-x2+2ᔣm16ᓫᑮḄᱥ2.ᑡ¡⚪:1ᱥ2Ḅ᪆,⚔'ᙶ᪗$ফ▢¥kᑖḄ☢§______3e¨©ᱥyzª{'O«¬180ᑮᱥV3,ᑣᱥy3Ḅ᪆$_ ~ᔣJ⚓'ᙶ᪗$.14.15ᑖpqrᦪy=ax2+bxḄMQz'2,0,-1,6.1®pqrᦪḄᐵHফᑏ>?Ḅ!"#°⚔'ᙶ᪗:3±²xᙠ³´UᑁS-rᦪy<0?15.15ᑖpqrᦪy=x2+4x+k-1. 42পeᱥDX#ᨵN6·ḄO'®kḄSU;(2)eᱥḄ⚔'ᙠx#<®kḄ.16.(15ᑖ)ᱥy=-x”+(m-l)x+mDy#O'(0,3).(1)®>mḄ¸¹>ºᩩᱥ(2)®ᱥDx#ḄO'°⚔'ᙶ᪗;ব,xS³´-ᱥᙠx#<~½(4),xS³´-,yḄ.xḄ/ᜧ12+.¾ὃᫀ5ஹ⌱Â⚪(+⚪3ᑖᐳ24ᑖ)l.B»2.D3.B»4.A»5.B6.B7.C»8.CpஹA⚪(+⚪4ᑖᐳ16ᑖ)9.y=2x2-5x+2,(-,0),(2,0).10.26.1l.xi=-l,X2=3.122tஹ⚪(ᐳ60ᑖ)13.(1)y=-(x-l)2+2,(1,2);2(2)S=2;(3)y=(x+1)12,ᔣ<⚔'ᙶ᪗$(-1,-2).314.(1)ᵫ⚪Ã0=4a+2b,6=a-b,a=2,b=-4.pqrᦪḄᐵH$y=2x?-4x. 43(2)Vy=2x2-4x=2(x-l)2-2,!"#$x=l,⚔'ᙶ᪗$(1,-2).ব,0 44ᓝᦪᕜᕜ2ஹ⌱⚪ ᐳ10 ⚪, ⚪3ᑖ"ᐳ30ᑖ#1.ey=pqrᦪᑣËḄA.±2»»»»B.2»C.-2»D.Ì Í2.pqrᦪy=2x-12+3ḄMQḄ⚔'ᙶ᪗A.l,33°°C.1,—3»D.-1,-33.epqrᦪy=^+bxḄMQḄ!"#%x=2ᑣbḄ$A.2°6°°B.-20°C.4aD.-44.©ᱥÎ=AT-1P+2ᔣ<26ᓫÏ:¨ᔣm36ᓫÏ:ÐᑮḄᱥḄ᪆$A.y=x-1+4oB.y=x-42+4C.y=x+2/+6D,y=x—42+65.ᱥy=—ߟÑx—ᑐ2+1ḄMQz{'ᑣm$A.1C.-1D.i16.pqrᦪḄMQ0WxW3Mᡠ\ᐵlrᦪᙠᡠÓSUᑁᑡ ḄA.rᦪMQDy#ḄO'ᙶ᪗0,3B.⚔'ᙶ᪗1,-3C.rᦪMQDx#ḄO'ᙶ᪗3,0ஹ—1,0D.,x<0-,y.xḄ/ᜧ12+10.Mpqrᦪy=ax2+bx+cMQḄ5kᑖ}z'43,0,pqrᦪMQḄ!"#%x=l,ᑡÔÕ ḄA.62-4ac<0■>B.ac>0»»C.b~2aD.a-6+c=0$'&'⚪ (ᜧ⚪ᐳ6* ⚪" ⚪3ᑖ"ᐳ18ᑖ#11.©ᱥy=xḄMQᔣ<16ᓫᑣÐḄᱥḄ᪆$12.ᱥy=x-i2+2Ḅ!"# 4513.pqrᦪy=x?+lḄᨬ+14.Mᡠ\ᙠ·5ᙶ᪗HB,Ý>oজy=3x2ঝy=gx2;ঞy=/ḄMQᑣMQáâᑮ15.Mᱥy=ax2+bx+cDx#O4ஹ8N'⚔'CḄᙶ᪗$52.è©ᱥᔣm26ᓫᑮᱥy=ad+Z>ix+cᑣ▢¥kᑖḄ☢§$16.ᱥp-.y=ax2+bx+cḄ⚔'$C,Dx#O4ஹ5N'('Aᙠ'3ïn)'cᐵx#Ḅ!"'$C,ᡃñ"8A$⚔'}z'C!"#Dy#óḄᱥ$ᱥPḄ“õö÷”ᱥᑣᱥy=x2-2x-3Ḅ“õö÷”ᱥḄ᪆$tஹ⚪(ᐳ8⚪ᐳ72ᑖ)17.(ú⚪8ᑖ)ûzü~ᑏ>ᑡᱥḄ ~ᔣஹ!"#°⚔'ᙶ᪗(1)y=x2—4x+5(2)y=-4/+3x18.(ú⚪8ᑖ)ᱥy=-x2+bx+cyz'43,0)ஹ8(-1,0)(1)®ᱥḄ᪆(2)®ᱥḄ⚔'ᙶ᪗19.(ú⚪8ᑖ)ᙠ☢%þᙶ᪗HBᱥᱏ/+5X+4Ḅ⚔A,x8,ᱥyc(1)4ஹ8ஹCḄᙶ᪗(2)ᱥy=x2+5x+4ᐜᔣ%&'1(ᓫ*+,-./ᔣ0&'2(ᓫ*+,.&'-ḄᱥḄ1᪆320.6⚪8ᑖ)9:;<=ᦪḄ?@ABA(0,3)ஹ8(-3,0),C(2,-5) 46পFGHI;<=ᦪ1᪆3(2)ᑨKP(-2,3)LᔲᙠO(;<=ᦪḄ?@P?Sᙠ.TUVPA8Ḅ☢XYSZᙠ,T[\ᳮᵫ21.(_⚪8ᑖ)?.⚔”ᙠyPḄᱥay=x+1b4ஹBc.dAᙠxP.BḄeᙶ᪗2,fgAM.BM(1)ᱥḄ=ᦪᐵi3(2)ᑨKVj8/WḄkl.m[\ᳮᵫ22.(_⚪10ᑖ)9:;<=ᦪy=x?+bx+cn.=ᦪyopqxḄrᑖst0⊤:X......-101234......y......1052125......(1)w;<=ᦪḄᐵi3(2)xxytz.yᨵᨬ}t.ᨬ}tL~(3)A(m,yi)ஹ8(m+l,y2)cᙠw=ᦪḄ?@.ᐸnF)/2Ḅᜧ}23.(_⚪10ᑖ)ᱥy=/-x—6x4ஹ3(4ᙠBḄ).yC 47(1)VABCḄ☢XফMᙠy%ḄᱥP,S"“o=-54COB,MḄᙶ᪗324.(_⚪12ᑖ)?.ᱥCiy=a(x-1)2ABA(3,4)পaḄt(2)ᱥCiᔣ0&'k(⊟0)(ᓫ*-.ᑮᱥC2,d6ABB(3.0),kḄtC2Ḅ1᪆3(3)ᱥGyPLᱥCḄP.dVPBDḄak.P2Ḅᙶ᪗ 48;ᓝ;;<=ᦪᕜᕜ31.9:;<=ᦪy=x2-3x+m mᦪḄ?@xḄ(1,0.ᑣᐵxḄᐗ;<¢£x2-3x+m=0Ḅc(¤ᦪ᪷LA.X!=1,X2=-lB.xi=l,x2=2C.X1—1»X2=0D.xi=l,X=322.?.9:ᱥy=ax?+bx+cxḄ(A 1,0,Lax=—1,ᑣax2+bx+c=0Ḅ1LA.Xi=-3,x=lB.Xi=3,X2=lC.x=-3D,x=-223.;<=ᦪy=x2-2x-3xḄc(¦§Ḅ¨©4.0ᑡᱥn.xᨵc(ḄLA.y=3x2—5x+3B.y=4x2-12x+9C.y=x2-2x+3D.y=2x2+3x-45.9:ᱥy=axZ2x+lx«ᨵ.¬wᱥḄ⚔ᡠᙠḄ@▲LA.°@▲B.@▲C.;@▲D.@▲6.ᱥy=kx2-2x+1Ḅ?@x 1±ᨵ(.ᑣk=Y 2ᨵc(.ᑣkḄ²t´L.7.᪷µ0ᑡ⊤¶Ḅst.ᑨK¢£ax2+bx+c=0 aW0,a,b,cᦪ(1Ḅ´LX3.233.243.253.26ax2+bx+c-0.06-0.020.030.09A.3Vx<3.23B,3.23 4910.9:ᱥy=x2-2x+lxḄ((m,0),ᑣ¿ᦪ3m2-2m+2017Ḅt()A.2015B.2016C-2017D.201811•ᱥy=2X2-2^/2X+1ᙶ᪗Ḅ(ᦪL()A.OB.1C.2D.312.?L;<=ᦪy=ax2+bx+cḄrᑖ?@.ᵫ?@À:ZÁ3ax2+bx+c<0Ḅ1ÂL()O\:25\%A,-l 50(2)O(;<=ᦪḄ?@xᨵc(ÔᐳA.B,dBᙶ᪗(1.0),Aᙶ᪗.18.9:;<=ᦪy=ax.bx+c(a>0)Ḅ?@xA(xi,O),B(x2,0)(X1VX2)c.yC,x,,X2L¢£x2+4x-5=0Ḅc᪷.fybL*(1)ᱥḄ⚔D,SMBDSMBCḄt;(2)NADC=90°,;<=ᦪḄ1᪆3.½ᫀ1.B2.A3.44.D5.D6.(1)1(2)k<1dkWO7.C8.C9.1:¹?@ᶍ(1)xi=0,X2=2(2)x<0ᡈx>2(3)0 5118.1(1)1¢£x?+4x-5=0xi=-5,X2=l. 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⊤"#$Ḅ%()A-c■-2~<~~6D.í-2I01ூᫀAூm᪆m:»P(a+1,3+1%ᐵḄᙠ▲PAᙠ▲,,fa+1<0,'¤+1>0,mÏV-11ð11 ᙠᦪ ⊤"#$Ḅ%Ic1>A-z-1u1ஹ⚪(ᜧ⚪ᐳᨵ4⚪⚪5ᑖᐳ25ᑖ)1&P(2a—4,3Q(—4,3b+2)ᐵ()+6=.(+,-.ᑖᦪ,ᑏᡂa/b2350:1/2) 95ூdᫀ7/3ூm᪆m5ᐵᑣéêᙶ᪗ë.Ãìᦪ,AᡠI2a—4=4,3b+2=-3mÏ=4,6=—h,57ᡠI“+6=4+(—)=—•14ஹ6%4x4Ḅ#829:ᵫòᐸ=>᪗ᨵᦪAḄB⁐D#82EFGHIJ6=ḄF⁐Kᑖ᪀ᡂ>=62ᑣM>B⁐D#82ᑁḄᦪA%ூdᫀ3ூm᪆m:6;᪗ᨵᦪA3ḄB⁐D#82EFGHIJ6=ḄF⁐Kᑖ᪀ᡂ>=62.AᦑM>B⁐D#82ᑁḄᦪA%”.1i7(2a+36,-2)'0(8,3a+2)ᐵᑣa+b=(+,-.ᑖᦪᑏᡂa/b2351/2)ூdᫀ-6/52a+36=—8ூm᪆maᵫ⚪ÒÏ53a+2b=2ú115a4-56=—6,a+b=16ஹ7(5.3)ᐵḄḄᙶ᪗%() 96ூdᫀ5ஹ-3ூm᪆m5(5,3)ᐵḄḄᙶ᪗%(5,—3). ஹ⚪(ᜧ⚪ᐳᨵ2⚪,⚪10ᑖᐳ30ᑖ)17ஹP(2.rஹ/+4)Q(<+1,õ)ᐵSTᓝḄ.Aூm᪆m5Î.P(2z.//2+4)Q(«+1,_)ᐵᑣ(2]=_(12+1)\y2+4=4ymÏr=—l,,v=2,T+//=1.18ஹW☢YZᙶ᪗[=7(a,-5)ᐵḄ77Ḅᙶ᪗%(3,b+4),TC(a.øᐵùᵫḄ8Ḅᙶ᪗.Aூm᪆m5.ᐵḄéᙶ᪗êᙶ᪗ë.Ãìᦪ,,a=-3.6+4=5A.•.=-3,b=LC.(3,-1),A»ᐵ Ḅéᙶ᪗ë.Ãìᦪêᙶ᪗qú.‘8Ḅᙶ᪗.(3,-1). 97 ᓝ !"ᦪᕜᕜ%4&ஹ⌱)⚪1.+p(5,-3)ᐵ./+01Ḅ+Ḅᙶ᪗5()A.(3,-5)B.(-5,-3)C.(-5,3).D.(-3,5)2.8+P(1,-n),Q(m,3)ᐵ./+01=ᑣP,Q?+Ḅ@AB()Aஹ8Bஹ272CஹV10Dஹ2M3.ᙠG☢IJᙶ᪗KL=+A(l,3)ᐵ./+01Ḅ+A'Ḅᙶ᪗B()A.(-1,3)B.(1,-3)C.(3,1)D.(-1,-3)4.P=▢RSᑖUᡂḄPᫀX5ᐵ.xZᡂZ01ḄP[\5ᐵ.ᙶ᪗/+ᡂL]01C.M(-1,-3),N(1,-3)D.M(-1,3),N(1,-3)5._ᑡP[X5Z01P[\5L]01P[Ḅ5()6.P=ab[ABCDcab[FGHEᐵ.+ᡂL]01=_ᑡhiL┯kḄ5()A.ADEF,ABGFB.BO=GOC.CD=HEBC=GHD.DO=HO;7BCE ஹop⚪7.+P(3,-5)ᐵ./+01Ḅ+Ḅᙶ᪗B8.ᙠG☢IJᙶ᪗Kᑁ=8+A(a,-3)c+BC2,b)ᐵ./+01=ᑣa+bḄrB 989.tu+A(x,1)c+B(2,.y)ᐵ./+0.1=ᑣ(x-y)w'ḄrB.10.ab[ABCD5Gxab[=0JyAC,BDz{.+=|OABCD}+~180°,ᑣZABCḄ5,ZAOBḄ5.11.ᙠῪIJ^ABCL=NC=90°,BC=2cm,ACḄL+OB~L]= J[~180=+BᑮB'ᜐ=ᑣ+Bc+B'Ḅ@ABcm. ஹ⚪12.P,ᙠG☢IJ.ᙶ᪗KL=tu4ABCḄ ⚔+Ḅᙶ᪗ᑖBA(-5,1),B(-2,2),C(-1,4),ᢥ_ᑡ⌕P(1)ABCᐜᔣG4ᓫ¡¢ஹ£ᔣ_G1ᓫ¡¢=¤ᑮABC,¥AiB1Ci§ফAzBGcAABCᐵ./+0ᡂL]01,¥AzB©.13.P=ᙠG☢IJᙶ᪗KL=^ABCḄ ⚔+A,B,CḄᙶ᪗ᑖB(2,4),(1,1),(3,-1).(1)}+P(-1,T)~180°,¥~«ḄP[4AiBC;(2)ᑏ¥ABGḄ ⚔+Ḅᙶ᪗.14.ᙠG☢IJᙶ᪗KL=Z\ABCḄ ⚔+ᙶ᪗ᑖBA(2,-1),B(3,-3),C(0, 99-4)(1)¥AABCᐵ./+0.ᡂL]01ḄAIBCI§(2)¥ABCτᐵ.yZ01Ḅ4A2B2G. 100 ᓝ 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Ḅ 5. ᑡ Ḅ 06.ᡠ# ᫀ ᫀḄ .0-7.& ᑡ'()*+,ᡂ.(,01 ᨵOLYMPICA.1(B.2(C.3(D.4( 1148.23-3—3,AABC:AA'B'C'ᐵ<=0ᡂ ᑡ>?#ᡂ@Ḅ ()A.OC=OC'B.OA=OA'C.BC=BZCD.ZABC=ZA/C'B'a23—3-39. ᑡ C# Ḅ A.DEFGB.HGIJC.ᙊD.LM10.NOᑴQR.(☢ᫀᙳUVḄLMWXYZ23-3-7ᡠ[ᑣ](LMWXYZḄD☢^_`a 23-3-7ᑄ11. ᑡ Ḅ A.JB.HGIJC.cdD.DEFG12.▢fgᑖiᡂḄᫀ ᐵ 115C.M(-l,-3),N(l,-3)D.M(-l,3),N(l,-3)tஹvw⚪13.x.y=z{180°:lᩭᔠḄ ,LG ]᪵Ḅ.NLGxḼḄ z{.(N<180°ḄJ`:lᩭḄLGᔠ,ᑏNḄ.(z{JḄᦪ14.⌕ᙠ.ᙽMḄwᙢ.( ᫀ ᫀḄ.ᐸ#ᔠ¡⌕¢Ḅ (v£¤).0¥15.ᑏ¦( ḄFG .16.15—2-22,FGABCD z{= z{ ,z{Ra:¨©ᔠ,ᑣAD=17.ᑖ᪆ ☢ᫀḄᡂ¬®ᑭᵨ.(ᙊ±¬D²ஹz{n¡.(ᫀ³Ḅ¡´.`18.µ.µ¶±¬ᒘ⊡I.I{ᓄpLJ.I.19.(1)(2)(3),ᙠ3(¼½(¦U¾½=Ḅ¿Àᙳp1(ᓫÂ)ᑁᑖo¡1(ᫀ⌕¢Ä(1)ᙠ(1)ᡠ¡Ḅᫀ ☢ÅH<ÆḄÇ(2)ᙠ(2)ᡠ¡Ḅᫀ ☢ÅH<2ÈḄ Ç(3)ᙠ(3)ᡠ¡Ḅᫀ ®É☢ÅH<3Ê. 116®ᡠ¡ḄᫀᵨËÌÍÎ.a20. ϡСḄMÑÒᫀḄ.gᑖÓᵨz{ÔᣚḄMÖᙠᙶ᪗×Øxl=ÙÚ┐ÜÝz{90°ஹ180°ஹ270°,®Þᙠᔜà▲ᑁḄâãᑮ.(åOḄ“@W”ᩭµ.µᔳé21.ᙠ ᡠ[ḄêJᙶ᪗ëÞ.(ìGᑏḄì(⚔=Ḅᙶ᪗,ᯠÞ](ìGl=pz{ z{Jp180°Ḅ®ᑏḄ⚔=ᙶ᪗. 117ïᫀ.ஹ⌱ñ⚪1ஹcó᪆ÄQHJ_BChH,CH=5-3=2,÷QEF±ADø/Ḅûc<=F,ᑭᵨz{üḄᐵëýþDHCDFE,ᑣEF=CH=2,ᦑS=3X2X5=3,ᦑ⌱C.2ஹ᪆ᑨ ⌕ ᑮ!ᙠSOS!$%0Ḅ()*Ḅ.+ᫀA3ஹ᪆:᪷0)*123)*Ḅ 4ᑨ.জ)*63)*7ঝ3)*!9)*7ঞ)*63)*;ট=)*63)*.+ᫀ:A4ஹD@A)*A,B,CCDEF)*.5ஹ᪆⌱⚗A=)*63)*7⌱⚗B)*!3)*;⌱⚗CஹD=)*!63)*.+ᫀA@A(1)3)*┐ ᩩMNOP!)*┐ Q@OP7(2)3)*ᙠRSTᢚ180°XYZ[ᔠ!)*ᙠ]☢_EF180°XYZ[ᔠ7(3)3)*`)*C abcdᣚ!dᣚfgḄ)*CXh)*[ᔠ.6ஹB@Aᙊ`klmC3)*`)*!noḄpᔠ=3)*6)*.7ஹ᪆ᵫḄ 4s!t Q@EF180°guXh)[ᔠ!ᑣᨵ$%0ஹI)*.+ᫀBy⚪{|ὃ~)*Ḅᳮ.8ஹ᪆: @ஹNஹl⚪ᐵ.+ᫀ:D9ஹ᪆:l*3)*,3nḄ ḄᡠᙠḄMN,9)*!l*tnḄEF120°XhᩭḄb[ᔠ!OEF180°.+ᫀB 11810ஹ᪆⚪◤ᨵ RSu!1▭ !1Yu¡¢Ḅ£ᓫ)ᫀ¥⊤ᔜ)ᫀ.+ᫀ:A11ஹ᪆l3)*)*7l*3)*)*;N¨3)*6)*7]©ª*)*3)*.+ᫀC12ஹ᪆ᵫ⚪|s@MX@Aᐵ¬h@0!ᡠ1M(l,3);@NX@Aᐵ¬x3!ᡠ1N(l,3).+ᫀCy⚪{|±⚪ὃ~]☢Mlᙶ᪗´ᑁ@ᙶ᪗Ḅ¶·! Q@A(m,n)ᐵ¬x3Ḅ@ᙶ᪗(m,n),ᐵ¬y3Ḅ@ᙶ᪗(m,n),ᐵ¬h@Ḅ@ᙶ᪗(m,n),»Q¼½¾¿.ÀஹÁR⚪13ஹ᪆Âk*)*!ᡠ1,⚪Ã⌕ᐙᑖᑭᵨ)*ḄᨵᐵsÈ.Âk*tḼnḄEF60°ᡈ120°C1ËnXhᩭḄÂk*[ᔠ.+ᫀ60°14ஹᑖ᪆)ᫀ(1)(2)(4)=3)ᫀ,6)ᫀ!Dᨵ)ᫀ(3)Ì3)ᫀ.+ᫀ(3)@Íᑭᵨ3)*`)*Ḅ 4,⌲ ÏÐ.15ஹ᪆᪷03ஹḄ 4.+ᫀÑ*ஹÂÒ*16ஹᑖ᪆᪷0EF)*Ḅᱯ@ᑖ᪆.+ᫀ0180BC0CODஹ+⚪17ஹD⌕ᔠᳮᓽ.18ஹÕÖ)019ஹᑖ᪆ᵫØÙÚÛ@ḄÜÝᙳ1Qᓫbßà!sál*Ḅâ;ß1,☢ã_I,ᡠ1åæḄ)ᫀ(1)çèéᨵ4Ql*;åæḄ)ᫀ(2)çèéᨵ8Ql*7åæḄ)ᫀ(3)çèéᨵ12Ql*. 119s(1)êQl*Ḅ☢ã_I,ᡠ1D◤ᙠëÛᑁìí4Ql*,îᡂ3)*,åæ)ᫀ).(2)êQl*Ḅ☢ã_I,ᡠ1D◤ᙠëÛᑁìí8Ql*,îᡂ)*,åæ)ᫀa(3)êQl*Ḅ☢ã_I,ᡠ1D◤ᙠëÛᑁìí12Ql*,î=3)*!6)*!åæ)ᫀ).ð@ͱ⚪êñ+ᫀCòóḄ,+ÃᢕõØ@, ᪷0l*Ḅ☢ãö êQëÛᑁḄ)ᫀᵫ÷Ql*pᡂḄ7Àø»ùl*ᢥ¼ ᑡ.20ஹᑖ᪆ì▢þÃ⌕ÿ ᑭᵨᣚḄᱯ⌕┯ᔲᑣᳮḄᦔ. : !.21ஹ ᡠ&;ᙶ᪗ᶍ 120 121,-ᓝ/0-12ᦪᕜᕜ516ஹ⌱8⚪:ᐳ16<⚪=1. ZXABCᑁ?@0,AB=BC,NABC=120\ADB0ḄCD,AD=6,FGABḄA.3B2733HD.22. 0AIḄJDKBCLOA,DI00L6MNADB=28ᑣNAOCḄA.14%B.28°C.56%D.84°3. ḄCDCDNKEFḄOG,NDCF=20ᑣNEODP@:=A.10"B.2TC.40°D.80°4. QRC,DIJᙊTLḄUPᑖW?AC,BC,CD,OD,BCXODYZ@E.ᑣ!ᑡ\]^জ/CBA=30ঝOD_LBC,ঞOE=aAC,ট/_`AODCIa`.HbḄcᦪI:= 122£AORA.1»B.2C.3D.45. QRᙊde/BOC=78ᑣᙊᕜe/BACḄfᦪI:=6. A,B,C,ᙠ0LZABO=32°,/ACO=38,ᑣ/BOCP@:=7. hABCDḄ⚔AஹBஹDᙠOL⚔Cᙠ0ḄCDBELNADC=54,W?AE,ᑣNAEBḄfᦪB:=8. ,AஹBஹCIOLḄUjZABC=70,ᑣ/AOCḄfᦪI:= 1239.!ᑡ/c O,NxIᙊᕜeḄI:=)2ᓛD.411. ᙠOQRNOAB=22.5,ᑣNCḄfᦪB:=C.115.5°D.112.5°12. QROI4ABDḄ?ᙊ,ABIOḄCDCDIOOḄK,/ABD=58,A.116°»B.32°oC.580«D.64013. ᙠOCDCDKAB,ᑣ!ᑡ\]OHbḄI:=A.AD=ABB.ZB0C=2ZDC.ND+NB0C=90°D.ZD=ZB 12414. ᙠ0OZCBO=45°,ZCAO=15",ᑣNAOBḄfᦪI:=A.75°B.60°C,45°oD.30°15. IAABCḄ?ᙊZOCB=40°,ᑣ/AḄfᦪI:=A.40°»B,50°C.6O%D.100°16. ,ABIḄCD,ABᚖC@KCD,ZBOC=70°,ᑣNABD=()-ஹop⚪:ᐳ13<⚪=17. AஹBஹCஹDᙠL,OB_LAC,M/BOC=56,ᑣNADB=ᖆ.18. AஹBஹCᙠLMNC=30,ᑣNAOBḄfᦪBA 12519. ,0ḄCDABrKCDᚖCjNBAC=40,ᑣNBOD=20.2013•t┶= ,0CDAB=8,/CBD=3OᑣCD=.21.ᙠᙊO30ḄᙊᕜeᡠvḄKḄwfB2xᑣycᙊḄJDI.22. QROOIAABCḄ?ᙊM/BOC=100ᑣNBAC=.23. ,ABIOḄCD,CᙠOL,Pᙠz{OAL|}.~/BCP=a,ᑣaḄᨬᜧI.24. ,PI6,AஹBஹCIOLḄU,/AOB=60°,PA.PBᑖZ@MஹNᑣ/APBḄI. 126MlWc,O\//6o\\---)25. ᡠ&OOQR/BAC=NCDA=20,ᑣ/ABOḄfᦪB.26.QROI4ABC?ᙊḄᙊdMNBOC=110ᑣNAḄfᦪI.27. AஹBஹCஹDᙠLNABC=901AD=3,CD=2,ᑣOḄCDḄwI28. OCIOḄJDABIKjOC_LAB,PᙠL,NAPC=26ᑣNBOC=f.29. ,_wB1Ḅ 127Uஹ ⚪(ᐳ1<⚪)30.(1)ᵬᐳᨵUc,ᔜḄᦪᙳᙢ☢⊤ᡠ&:ᙳᙢ☢/ᦪ/⚕A200.15B50.20C100.18ᵬᡠᨵ¡Ḅᙳᙢ☢(¢bᑮ0.01⚕);2222(2)ᐜᓄ¦!§¨$ …+$6-3±2.J©Ox=&+l,y=242~2ªx+yx+y(3) QRA,B,C,DILḄ/«wDC,ABYZ@E,MBC=BE.¬^4ADEIPῪUe`. 128&ᫀ6ஹ⌱8⚪(ᐳ16<⚪)1.Aª2.Cª3.C;4.D;5.C;6.D;7.A;8.Bª9.C;10.Cªll.D;12.Bª13.B;14.B;15.Bª16.Cª-ஹop⚪:ᐳ13<⚪=17.28ª18.60;19.80°ª20.4;21.2Eª22.50^;23.90^;24.0° 129,-ᓝ/0-12ᦪᕜᕜ526ஹ⌱8⚪:Ã<⚪3ᑖ.ᐳ30ᑖ=1. .ABIḄKNAOB=90°.MOA=4,ᑣABḄwB:=2. ᙠOKABḄwB8cm.MIABLÄ 6jOMḄᨬ 130,7⚪ ,8⚪ ,9⚪ 8.Î.ABIḄCD,A10,KAC=8,0_1_:2@£,Z@DÐÑBE,ᑣBEḄwB:=A.V13B.2<2C.5D.69- ÓÔABCḄ_BCBCDḄDOᑖZAB,AC@D,E,MZDOE=60°,AD=~ᑣACḄwB:=A.V3B.2C.2V2D.2V310. Z\ABCO,NBAC=90°.AB=AC=2.DBACL6}ÓADBCDḄBD@E.ᑣz{CEḄᨬ 13116. .ABB0ḄCD,AB=10,C,DBL}C,DrA,Bßᔠ=.jCDBTw,CE_LAB@E,MICDḄOᑣEMḄᨬᜧB.Uஹ ⚪:ᐳ8⚪ᐳ72ᑖ=17.á⚪8ᑖ= AஹBஹCILḄU,BOâᑖ/ABC.¬:BA=BC.18.á⚪8ᑖ= ᙠ0O,/A=/C.¬^AB=CD.19.á⚪8ᑖ= ,/_`ABCDᑁ?@ZABC=135°.MḄJDB2ACḄw.20.á⚪8ᑖ= /_`ABCDᑁ?@ᙊO.NADC=90fBDâᑖZADC,AD=20,CD=15./_`ABCDḄ☢. 132DB21.(á⚪8ᑖ) ,ᙠᓫwfB1ḄH`O6{ᙊäåNAஹBஹC.ÓBØஹæCXçâᔣBÙஹ_wBᓫwéÀâ☢Ceᙶ᪗×.(1)C?ᑏBஹCḄᙶ᪗^BஹC;(2)ᙠ O᪗ëᙊäᡠᙠᙊḄᙊdDḄ.(3)C?ᑏDḄJD=(\íᶇ᪷ð).22.(á⚪10ᑖ) ,ADB0ḄCD,CDBK,A6=BC,W?oB. 133(1)¬:0BCD;(2)MAB=15,CD=7.ḄJD.23.(á⚪10ᑖ)QR^Z\ABCO,AB=AC,ÓACBCDḄOZBC@D,ZAB@E.(1) 1.¬^CD=DE(2) 2MAB=13,BC=10,FBJᙊḄO,DFḄw. 124.(á⚪I2ᑖ)ᙠâ☢Ceᙶ᪗×OPᙠxÙL,PZxÙ@AஹBZyÙ@C.DEBL6.W?CE. 134(1) জMAC=CM,AB=13,BM=5.CḄᙶ᪗ªফ ঝúBAPᡷüýþDE,CE,BEÿ Ḅᦪᐵবঞ0APᑏDE,CE,AE Ḅᦪᐵ() 135 ᓝ !ᦪᕜᕜ#3$ஹ⌱'⚪32.)*+,-ᙊḄ/0ᑖ2437,ᑣ56Ḅᙊ789:;<=A.2B.3C.6D.1133.)*Ḅ>08cm,P>?/A$0P=4cm,BC>?/DḄEᐳᨵ<=A.0HB.1HC.2HD.1Hᡈ2H34.ᙊDᙊḄIJᐵKᨵ<=A.+,B.+ᑗMM.ᑁOD.Q35.4=30°,C6A$TC=6,UCᙊ7/04ḄᙊDOAḄIJᐵ;<=A.+QAB.+,AC.+ᑗAD.+,ᡈ+ᑗ36.,A8;Ḅ>02CD+ᑗWX,YZOC,W[DE48,WE,YZAE,]4c=40°ᑣNE_W<=A.40%B.50°C.20°D.25°37.)*Ḅ/06cm,ᑮ>?/Ḅ8Q5cm,ᑣ>?/D<= 136A.+,B.+QC.+ᑗD.+ᑗᡈ+,38.)*MPᑮ>?/Ḅ8Q3,UPᙊ7/•/0bᙊcᙊAᨵTdᨵ-ᑮ>?LḄ8Qᙳ2,ᑣ/0rḄfgi;<=A.r>1B.r>2C.2 137AA44.)*A8Ḅ>0jAḄCḄᑗ?,ZBḄwq?WE,4D1ECWT,WF,YZBC,CF,AC.(1)y:BC=CF(2)|4=6,DE=8,CD=3,yBEḄq.Kj45.48Ḅv]41TBZ)=CD.(1)yM8D;Ḅᑗ?(2d4C=3,=1,yBCḄq.R3 13846.)*MC;UAB>0Ḅ/ᙊA$CHWH,>?ACDjBḄᑗ?+,WD,ECHYZAE}wq,8WF,>?C~,>?WG.(1)AyMF;BD;(2)yMCG;Ḅᑗ?(3)A]?B=FE=2,yḄ/0.AA 139ᓝM ᙊᕜᕜ#4ஹ⌱⚪ ᐳ10 ⚪" ⚪3ᑖ"ᐳ30ᑖ#1.*OḄ/05cm,Pᑮᙊ7OḄ8Q6cm,ᑣPDOḄIJᐵ; 14010.Xᙠ/03ḄOoᑁPA$wqPOஹRA,WMஹN.fᨬᜧgAPAḄq_W 14118.(⚪8ᑖ)ᙠ,48ஹC;>0,8E;ᑗ?,BᑗYZADஹBCஹBD(1)y:pA3¦ZkCOB(2)]ND8E=37yN4DCḄᦪ19.(⚪8ᑖ)ᙠ>ᙶ᪗Mᙠ$¯▲ᑁMN_Lx³WN,MN=1,QMDx³,W42,0)ஹ8(6,0)-(1)yG)MḄ/0Ḅq(2)ᑨOMD>?x=7ḄIJᐵ}ᳮᵫ20.(⚪8ᑖ),RtZXA3c»43c=90,U48>0[,ZCWD,E8cḄYZDE(1)yMDE;Ḅᑗ?(2)]NBAC=30,DE=2,yADḄq21.(⚪8ᑖ)ᙠpA8CAB=AC=10,BC=12,/pABCḄᑁ7(1)ySAABC(2)y8/ḄqIC 14222.(⚪10ᑖ)ᙠp/BC,NC=90-,Z4C5Ḅ¾ᑖ?,A3WO,Uᙊ7ḄDAC+ᑗWDপyMD8c+ᑗ(2)AC=3,BC=6yḄ/0Ḅq23.(⚪10ᑖ)A8Ḅ>0CḄvTABJ.CDWE,~ÁADA$BFnCDoG,FHᑗoVF,,CDḄwq?WH(1)y:FH=G”(2)jAB=2FH,GF=2E,y4GḄq24.(⚪12ᑖ)0pA8ḄZᙊ,EpA8DḄᑁ7,EḄwq?,00WC(1)1,y:CE=4C(2)2,43Ḅ>0AB=10,4=8জySAAOEঝy ḄgCE 143ᓝM ᙊᕜᕜ#5Oஹ⌱Q⚪Sᐳ10U⚪,VU⚪3ᑖKᐳ30ᑖ81.ÇÈḄÉHᑁ<=A.120°135"C.140°D.144°2.ËᑡÇÍÎ;³ÏÐÑ;7ÏÐḄ;<=A.ÇB.ÇÒgÇÔD.ÇÕ3.ÇÔḄ7;<=A.108°90°…C.72D.60°4.ABD+ᑗWB,AḄwq?,0WC,YZBC.ABC=120",OC=3,ᑣÁCḄq<=5.ÇØ/Ù,A5=2,P;EDḄYZAP,ᑣ4~Ḅq<=B.4C.VF3D.VTT6.ᵨ$Hᙊ7120/03Ḅᡧ[$Hᙊ┵ḄàᑣáHᙊ┵Ḅâ☢/0<13A.—o£>oB.loC.—«>D.2227.$Hᙊ┵Ḅà☢ê;â☢êḄ2ëᑣìᙊ┵Ḅà☢íîḄᡧᙊ7_W<=A.90°oB.120°C.150°D.180°8.)*G=Ḅ/013.v48=10,CD=24,ᑣ▢ðñᑖḄ☢ê;< 169C169C.ᔳrA.-------7U0B.-----7TD.:óô4329.ABCAB=5,AD=12õ4BCDᢥᡠøḄÒùᙠ>?/Aúû-üýᑣBᙠ-üýjþÿ Ḅ 144A.—nB.13nC.25nD.25rᐔ210.⇾Ḅ᪀⌼ஹᵫ7 ஹᜧ ᐰ!"Ḅ#$%&ᡂḄ(),#$%Ḅ⚔,-.),,/ABCḄ⚔,0ᙠ),2.34A3%ᡠ6ᑣ4ABC89:9ḄᦪᨵA.4oB.6C.8D.10$ஹ&'⚪ (ᜧ⚪ᐳ6* ⚪" ⚪3ᑖ"ᐳ18ᑖ#11.=>#?%Ḅ@ᑁ9ḄBᦪCD9Ḅ3Eᑣ#?%Ḅ%ᦪ12.>ᡧḄG.8cm,H.3;rem,ᑣᡧḄᙊD9.___________313.,SBC.ḄᑁK:9AB=1,ZC=30°,ᑣḄᑁK#LḄ☢N.14.OPxQᑗP,,OḄᙶ᪗. 0,1,,4ᙠP2UᙠV>W▲,NAPO=120,OPZXQ#Lᔣ\].^,AV>_`ᙠXQ2a,4Ḅbᙶ᪗.cdeᶇg15.ᙠA8CCC/=CB=2,NACB=90hABḄC,D.ᙊDiᙊD9.90ḄᡧDEF,VஹCាᙠHEF2ᑣC▢lmᑖḄ☢N.16.ᡧ0A8C,N7108=60ᡧG.4,,CᙠHA82,C2JL/,ᚖq.D.^OCDḄ☢NᨬᜧaC▢lmᑖḄ☢N.0ஹ12⚪ ᐳ8⚪"ᐳ72ᑖ#17. s⚪8ᑖᵨ>ᙊD9.120G.3Ḅᡧi>ᙊ┵Ḅw☢xyᙊ┵Ḅz☢G18.s⚪8ᑖᙊᑁK#{%/BC2EC,|9}/1CPBD!~,P,xNAPBCḄBᦪ 145EQ19.(s⚪8ᑖ),DᙠḄ8ZBḄ}2,Cᙠ2AC=CD,ZACD=1200(1)xCDḄᑗ}ফ=ḄG.2,xC▢lmᑖḄ☢N20.(s⚪8ᑖ)/8CDḄ%.1.5cm,3ஹC,ᙠᡧAEFḄHEF2,xHBCḄBᙊC▢lmᑖḄ☢N21.(s⚪8ᑖ)/A5CḄ:⚔,Ḅᙶ᪗ᑖ.4(54)ஹB(1,0)ஹC(6,0)(1)/A8Cᙶ᪗,⌮a┐£¤90,¥¦8Kᑏ¦4Ḅ|¨,zbḄᙶ᪗(2)ᐜ3cᔣ®¯3ᓫ±ᯠ³,´a┐£¤90,8Kᑏ¦4,µ]¶·Ḅ22.(s⚪10ᑖ)ᙠRtZk48CC,NC=90N8ACḄ®ᑖ}4D~BC%,D,hAB2>,.ᙊDi0»¼½ ,A,D(1)ᑨ¿8}BCPḄ±ÀᐵÂÃÄÅᳮᵫ(2)=4c=3,Z8=30°জx00ḄG 146ঝ3PA8%ḄÊ>~,.E,x}ËBDஹBEPÌHEᡠÎᡂḄ▢lmᑖ☢N(cdeᶇ᪷Ð7T)23.(s⚪10ᑖ)ᙠ#LA3CDC,A=2,EA8ḄC,.48EC,B⌮a┐£¤90³,E`ᙠCBḄ}2,Oᜐ,C`ᙠ,AᜐÒ}ËAO,F´a┐£¤90Ó}ËFG,ÔKEFஹCG(1)x:EFHCG(2)x,Cஹ,Aᙠ£¤ ÖCᡂḄHAC,HAGP}ËCGᡠÎᡂḄ▢lmᑖḄ☢N24.(s⚪12ᑖ)Ḅ858=4,4c×ZACᢚÙÌHAC,ÚᢚÙ³ḄÌH.AmC(1)1,^H/mC½ ᙊDaxACḄ(2)2.^HAmCPAB!ᑗAaজ¥¦H/mCᡠᙠᙊḄᙊDPঝx4cḄ(3)"3,3HAmCP8~D,3=x,ÛᵨXḄÜᦪÝ⊤6AC(8Kᑏ¦cd) 147SY1SY2SY3 148Vßᓝáâᙊᕜᕜä5>ஹ⌱æ⚪@ ⚪5ᑖᐳ50ᑖ⚪Ð12345678910éᫀ1.ḄG.4cm,dᙊD0ᑮ8}1Ḅíî.3.5cm,ïð8}1PḄ±ÀᐵÂA.!~oB.!ᑗC.!îD.òó42.,}ËABP!ᑗ,B,}ËAOP!~,C,AB=12,AC=8,ᑣḄGA.V10B.5C.6oD.103.NDCEᙊᑁKá%ABCDḄ>9dNDCE=75°,ïðNBADḄBᦪA.65°B,75°C85°«D.105°V2⚪8V3⚪V4⚪V7⚪4.AB0Ḅ88}PAP00!ᑗ,A,P0~,C,ÔKBC.=NP=50°,ᑣNABCḄBᦪ.A.25°»B.400C.20°1.15°5.AABCḄ:%ᑖ.6ஹ8ஹ10,ᑣᐸKᙊḄGA.3»B.4C.5oD.106.ḄG13,×ABCD,AB=24,CD=10,ᑣABPCDḄíîA.7B.17C.7ᡈ17¼7ᡈ137.AABCḄKᙊ×AB=4,NC=30°,ᑣḄ8.A.2A/3»B.4C.6D.88.ᙊḄG6,üýmᑖḄᙊD9ᑖ60P30°,ᑣ▢lmᑖḄ☢N 149()A.9»B.27þC.6ᐔ4).3þV8⚪»V9⚪a10⚪9.RtaABCNACB=90°,AC=4,BC=6,ABḄ0ᙊᡠḄᙊᑖACஹBCᑗDஹE,ᑣ 10.ᙠ"☢$%ᙶ᪗(xOy$)AB*A—4,0ஹB0,4,Ḅ+10ᙶ᪗,Pᙠ$)AB*PḄᩩᑗ)PQ,Qᑗᑣᑗ).PQḄᨬ01 A.J7»B.2MC.3D.V22ஹ34⚪ 50⚪5ᑖᐳ20ᑖ11.789ᡧ;Ḅᙊ%60°,+1,ᑣ=ᡧ;Ḅ>..12.@;ABCDA0Ḅᑗ@;DAB=10,CD=12,ᑣ@ABCDḄᕜ.12⚪13⚪»14⚪13.78ᙊ0$+AB=10,GAC=6,DA>BCḄHIAD,ᑣADḄ..314.$)y=—1x+6KxLB,KyLA,AB$+ᙊCA>ABḄ,HI0CK$+ABE,ᑣ0CḄ.. 150MஹNO⚪ ᐳ30ᑖ15. 12ᑖCAAB$+Ḅ$)AC*BḄᑗ)KD,EABDḄ$)CEK$)ABF.33 1YZ[CFA0Ḅᑗ); 2]EQ=2tanF==Y0Ḅ$+2416. 18ᑖCBḄ$+CBḄe.)*AḄᑗ)KP,PA=10,PB=5,ZBACḄ"ᑖ)BChᑖKDhE.Y 1ᙊ0Ḅ+i 2sin/84PḄ1i 3ED•EAḄ1.BE 1512ᓝ@pᙊᕜᕜq6ஹ⌱s⚪ 50⚪3ᑖ.ᐳ30ᑖ1..ABA0ḄGZAOB=90°.]0A=4,ᑣABḄ. A.4B.4,2C.243D.3,22.@;ABCDᑁI0,ABx*ᙊNB=3NBAC,ᑣNADCz A.100°B.112.5°C.120°D.135°3.AஹBஹC{ᙠ0]NA0B+NACB=90°.ᑣNACBḄᜧ0A A.20°B.25°C.30°D.40°4.ABA0Ḅ$+C,D,Eᙠ]NAED=20°,ᑣNBCDḄ~ᦪ A.100°B.110°C.115°D.120° 1525..Ḅ+A3,PAGABe.)ḄHIOP,]0P=4.ZAP0=30°.ᑣGABḄ. A.2V5B.V5C.2V13D.V136.I,aABCᑁI0,]NA=a,ᑣNOBCz )A.180°-2aB.2aC.90°+aD.90°-a7.ᙊ; ᡠGABAḄ78AB.100m,qᙊᕜ%NACB=45°,ᑣ Ḅ$+AD. 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