2021-2022学年湖北省黄冈市九年级（上）月考数学试卷（9月份）（附答案详解）

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2021-2022
ᓅḕᑄ᪥
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kᙳmn᳛=x,ᑣpᑡ=A.8001+2%=100B.1001-x2=80C.801+x2=100D.801+x2=1006.sta,b,cᑖx#yABCḄzn:ᑣ-ᐗMNa+b/+2cx+a+b=0Ḅ᪷Ḅ}~#A.ᨵᦪ᪷B.ᨵḄᦪ᪷C.ᨵḄᦪ᪷D.ᑨ7.st-NUᦪy=ax+bMNUᦪy=-ax2,ᐸaHO,b<0,ᑣ☢⌱⚗:pḄ#A._b_75yy

18.ᐵFxḄ-•ᐗMNa/+.+c=0c/+bx+a=0,ᐸa,h,c#ᦪ:Ra+c=0,᝞x=2020#a%2++c=0Ḅ-᪷:ᑡᔜᦪ:-¡#ex2+bx+a=0Ḅ᪷Ḅ#()A.±2020B.-----C.-2020D.---202020209.stx=l#%2+᱐-2=0Ḅ-᪷:ᑣḄ§-᪷#.10.Uᦪy=2/Ḅ¨©ᔣ,«¬=,⚔9ᙶ᪗=.11.st(y2+1)2+(y2+1)—6=0,y2+1=.12.-²ᦪ:ᓝ²ᦪ´µ²ᦪ´ᜧ1,²ᦪ´¶ᓝ²ᦪ´Ḅkµ·²ᦪ¸19,ᑣ·²ᦪ#.13.[᪥¹86º»¼½¾:¿ÀÁ⌕ÃᐸÄÀᑏ-¼½ᶇÇÈ=ÉÊ:ᐰº»ᐳᑏÍ930ᶇÇ:᝞ᐰºᨵxλ:᪷Ï⚪Ñ:ᑡÒ=.14.+,”:஻ᑖx=-ᐗMN/+2%—2022=0Ḅᦪ᪷:ᑣm2+3m+7i=.15.᝞:⌕+g-ÕÖ20cmஹn30cmḄᫀ:ᐸᨵÙÚḄÛᩩ:ÙஹÚÛᩩḄÖݵ2Þ3,᝞⌕ßÛᩩᡠᓰ☢â#ᫀ☢âḄã:ᑣ¿ÙÛᩩḄÖÝ#cm.16.᝞,äOABCḄzn=VLOC¶yḄçḄᜳé=15஺,98ᙠ2ᱥ45=a/(a>0)Ḅ:ᑣaḄP=.17.ᵨ〉íḄ"ᑡÞ(l)(3x-I)2=(x+l)2ï,1(2)2/+x--=0.18."Þ(1)X2-8X+6=0ï(2)(x-l)2=3x-3.19.stᐵFxḄ-ᐗMN/-2(m-l)x+m2=0ᨵᦪ᪷.(1)j:஻ḄðPòï(2)+óḄ᪷ᑖx=X],%>õö+=8-3%1%2:jmḄP•2

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ᐳᨵ169.(1)ᙳ(2)ᢥ᯿᪵Ḅ!ᐳᨵ"#$%&'21.᝞)*⌕,-./0101Ḅ2☠ᜋᜋ5☢ᨵ278Ḅ9:!2ᵨ<=>?ᡂ=>A-337?ᡂ-./Ḅ01◀9C᜜EᕜGHᨵI◣.K------12m|---------(1)*ᜋ-L187⌕?ᡂ01Ḅ☢ML150.7ᑣ01Ḅ-O8ᔜL"#7(2)H?ᡂ☢ML200.7Ḅ01ᔩ22.RSTUVᓬXᙠ├[\]^TU_`aL80ᐗ├[aL120ᐗcᜩe[f20_Lgh“j”l▭no⁚ᖪXrstu〉wḄxayz{᡽ᜧ├[~ᑭ
1\]*_TUxa2ᐗᑣᙳe"[f4_._TUxaxᐗ.(1)ᜩe├[__ᑭ.ᐗ(ᵨXḄᦪ⊤)(2)_TUxa"#ᐗcᙳᜩeᑭ1200ᐗ.(3)*X-ᙳᜩHᑭ2000ᐗH]ᔩᳮᵫ.23.᝞)ᙠA4BC=90஺,4஺=6cm,BC=8cm,PAf\¡2ACᔣC{lcm/sḄ£o஺Cf\¡CB2ᔣ8{2crn/sḄ£o.(1)᝞¤¥஺¦cf\§¨©eªPQḄ-L4«ᔖ7(2)P,஺ᙠ£o®ᔲ°ᙠ±c²ª³´PCQḄ☢Mµ¶´4BCḄ☢MḄ·.*°ᙠf¸oḄc¹*G°ᙠᳮᵫ.24.º»¼ᱥ¾y=2x2+Ti¿À¾y=2x-1Á¶(m,3).(1)ÂO"ḄÄ(2)¼ᱥ¾y=2x2+nḄ⚔ᙶ᪗O5ÈÉ(3)wxuÊÄcËÌÍᦪy=2/+nyÎxḄᜧÏÐÑ(4)Íᦪy=2/+n¿À¾y=2x—lḄ)Ò®ᔲÓᨵᐸÕÁ*ᨵfᩭ*×ᨵ,ᳮᵫ.

3ØᫀOÚ᪆1.ூØᫀ௃DூÚ᪆௃ÚKx(x-1)=X,x(x-1)—x=0,x(x—1—1)=0,x=0,x—1—1=0,X]—0,%2=2.ᦑ⌱KD.£⚗ᑖÚëᓽe³fᐗÌ.f.ḄÚᓽe.í⚪ὃÚᐗËÌ.ḄðᵨHñᐗËÌ.òᓄᡂᐗÌ.®Ú⚪Ḅᐵõ.2.ூØᫀ௃AூÚ᪆௃ÚK•••¼ᱥ¾ø=/+1ûüᔣý5ÈÉLyÉ.•¼ᱥ¾ÿ
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3.5⚪ὃ89:ᦪ;<=Ḅᙶ᪗ᱯ?⚪ᐵABCD9:ᦪ;EḄឋG.3.ூIᫀ௃Cூ᪆௃•••ᐵLxḄNO(PQ2)/ᑘ+x-1=0BQᐗ9:NO7n•••|m|=2[m—2W0,$m=-2^ᦑ⌱C.᪷Qᐗ9:NOḄ_`$ᑮm-2஺0[|ᑘ=2,ᯠdNOefg"ᓽ#$ᑮijᩩlḄmḄm.5⚪ὃ8ḄBQᐗ9:NOḄ_`ᑨoQpNOBᔲBQᐗ9:NOrstᢕv5pN☢“ᓄ{d"''Qp~ᦪ”^“~ᦪḄᨬ:ᦪB2”^“9:⚗ḄᦪfgL0"^“᦮"NO”.4.ூIᫀ௃C

4ூ᪆௃ᵫ;#x=4ᦪ$ᨬmy=-2X16+3=-29.-3ᦑ⌱C.5⚪ὃ89:ᦪᨬ(ᜧ)mḄ3.(᪷;Eᐭ./-12ᓽ#I)-TV?39:ᦪḄᨬᜧ()mᨵ1NQ#ᵫ;E/"\$9BN1B"./-\5.ூIᫀ௃Cூ᪆௃ᵫ⚪tḄᙳ¢£᳛,X,᪷2017,80ᔴᑣ2018,80(1+x)ᔴ2019,80(1+x)(l+x)ᔴ⚜2019¨ᑮ100ᔴᓽ80(1+x)(l+%)=100ᡈ80(1+x)2=100.ᦑ⌱C.ᑭᵨ¢£dḄ=¢£¬Ḅx(l+¢£᳛)ᙳ®:¢£Ḅ¯ᑖ᳛,x,᪷“±80ᔴ¢²ᑮ100ᔴ”ᓽ#$NO.³⚪ὃ8´Qᐗ9:NOḄrᵨ(¢£᳛µ⚪).⚪ḄᐵAᙠLᳮ¸⚪¹Ḅº`»ᑮ2017e2018ḄḄᦪ"᪷ᩩl»¼gᐵ"ᑡNO.6.ூIᫀ௃Aூ᪆௃=(2c)2-4(a+b)(a+b)=4c2-4(a+b)2=4(c+a+b)(c-a-b).■■•a,b,cᑖ¾B1¿ÀḄ1Á-■a+b>c.■■c+a+b>0,c—a-b<0,•••<0,•••NOÂᨵÃᦪ᪷.ᦑ⌱4ᵫLÄpNOBQpQᐗ9:NOᡠÆᑭᵨ᪷Ḅᑨ¾"#Æᑨoᐸ᪷ḄÈÉ.Ê=(2c)2-4(a+6)(a+b)=4c2-4(a+Ë᪷1¿ÀḄ1Áᐵᓽ#ᑨo.5⚪Ì⌕ὃ8´1¿À1ÁᐵஹQᐗ9:NOḄ᪷Ḅᑨ¾"gÏ.ÐB(2c)2-4(a+b)(a+b)ÑÒÓ"ᑖ.7.ூIᫀ௃C

5ூ᪆௃ᵫQ:ᦪÔÕQஹ1ஹÖE▲#$a>0,ᵫ9:ᦪ()ᔣ+#$a<0,ØὅÚÛÜ•⌱⚗AfÝᔠ⚪t^ᵫQ:ᦪÔÕQஹ9ஹ1E▲#$b>02ßb<0ÚÛÜ9⌱⚗BfÝᔠ⚪t^ᵫQ:ᦪÔÕ9ஹ1ஹÖE▲#$a<0,b<0,ᵫ%ᱥ'()ᔣ+#a<0,••⌱⚗CÝᔠ⚪t^ᵫQ:ᦪÔÕQஹ9ஹÖE▲#$a<0,6>02ß6<0ÚÛÜ••⌱⚗஺fÝᔠ⚪t^ᦑ⌱C.Öp⌱⚗ÑÒ⌲pᑖ᪆ᓽ#$Iᫀ.5⚪ὃ8´9:ᦪḄឋGáQ:ᦪḄឋGCDQ:ᦪḄ;E2ឋGஹ9:ᦪḄ;E2ឋGBâµ⚪ḄᐵA.8.ூIᫀ௃Cூ᪆௃a0,c40,a+c=0,•-=-1,a22Ax4--x4--=0,-x+4-1=0,aaaa-X2+-X—1=0,X2--x-1=0,aax=2020BNOa/+ᓃä+஺=oḄQp᪷•x=2020BNO/+gx—1=0ḄQp᪷rb20202+-x2020-1=0,a(-2020)2-gX(-2020)-1=0,x=—2020BNO/QåᑐQ1=0ḄQp᪷aᓽx=-2020BNOC—+bx+a=0ḄQp᪷ᦑ⌱C.᪷Qᐗ9:NOḄḄ_`ÆáQᐗ9:NOḄᓽ#3Iᫀ.5⚪ὃ8Qᐗ9:NO⚪ḄᐵABçèéᵨQᐗ9:NOḄ_`ÆáNOḄḄᭆë5⚪ìLíg⚪î.9.ூIᫀ௃-2

6ூ᪆௃Tx=1BNO/+bx—2=0ḄQp᪷•••xx==—2,12•••1•x=—2,2ᑣNOḄïQp᪷B-2,ᦑIᫀ,-2.᪷᪷2ᦪḄᐵ$X62==—2,ᓽ#$ïQ᪷Ḅm.³⚪Ì⌕ὃ8´Qᐗ9:NO᪷2ᦪḄᐵ$Ø᪷ðñ3ïQ᪷Bâµ⚪ḄᐵA.10.ூIᫀ௃=y(0,0)ூ᪆௃:9:ᦪy=2/Ḅa=2>0,9;E()ᔣ=By⚔ᙶ᪗B(0,0)ᦑIᫀ,=y(0,0).ᱞõ9:ᦪy=a/Ḅ;EḄឋGᓽ#$ᑮIᫀ.5⚪ὃ8´9:ᦪḄឋGÆá9:ᦪḄ;Eᱞõ9:ᦪḄឋGB⚪ḄᐵA.11.ூIᫀ௃2ூ᪆௃ூᑖ᪆௃ᐜy2+i=t,ᑣNO#÷À,t2+t—6=0,NOᓽ#3$fᓽø+iḄm.5⚪Ì⌕ὃ8´ᣚᐗᓽúûp"üýþQp᦮ÿᵨᣚ.ூ௃y2+i=t,1]+[-6=0,᦮ᳮ(t+3)(t-2)=0,£=3ᡈt=2,ᓽ(/+1)Ḅ&'3ᡈ2.■■-y2+1>1,y2+1(2.ᦑᫀ(2.12.ூᫀ௃32ூ᪆௃ᓝ-.Ḅᦪ(x,ᑣ-.Ḅᦪ(Q-1).1ᑡ34(x2+(x-I)2=10x+(x-1)-195=3,૙=3.5(6)X—1=2,•10%4-(%—1)=32.ᦑᫀ(32.

7ᐵ9(-.Ḅᦪ:ᓝ-.ḄᦪḄ;3<==>-ᦪ-19,?@ᐵᦪ&ᐭB᦮ᦪᓽ1.ὃDᐗFG34ḄHᵨIᵨᑮḄKLM(>-ᦪ=10xᓝ-ᦪ+-ᦪ.13.ூᫀ௃x(x-1)=930ூ᪆௃ூᑖ᪆௃1ᐰPᨵXRSTᑣUVᑏ(X-1)Yᶇ[ᐳᑏYᶇ[]^1ᑡ_34ᓽ1.`⚪b⌕ὃDdᵫ▭g⚪hi_ᐗFG34ᐸkx(x-l)lmᦪ᪷••m+n=—2,m2+2m—2022,ᑣ=m2+2m+m+n=m2+2m+(m+n)=2022-2=2020.ᦑᫀ(2020.ᐜᵫ34ḄḄᭆ<᪷:9ᦪḄᐵ9_m+n=-2,m2+2m=2022,ᐸᐭ=m2+2m+m+n=m2+2m+(m+n)1.⚪b⌕ὃD᪷:9ᦪḄᐵ9<34Ḅ⚪Ḅᐵ'n:ᑐ2'ᐗFG34a-+bx+c=0(a0)Ḅ>᪷y+x=—-x=2215.ூᫀ௃2ூ᪆௃UᩩḄ'2%஺"ᑣUᩩḄ'ᑖ1ᔠᡂ((30-2x3x)cm,((20—2x2x)cmḄ¡⚪{(30-2x3x)(2஺-2x2x)=30x20x(1-^),᦮ᳮ(5-x)2=16,%!=1,x=9(lᔠ⚪{6)2A2%=2x1=2.

8ᦑᫀ(2.UᩩḄ'2xC7”,ᑣUᩩḄ'ᑖ1ᔠᡂ((30-2x3x)cm,((20-2x2x)cmḄᑭᵨḄ☢¦§¨ᔠᑖᡠᓰ☢¦'«ᫀ☢¦Ḅ(1-¬)ᓽ1_ᐵxḄᐗFG34®ᓽ1_xḄ&¯ᔠ⚪{Ḅ&ᐭ2rk1B_UᩩḄ.⚪ὃDdᐗFG34ḄHᵨ°±ᐵ9²³ᑡ_ᐗFG34'⚪Ḅᐵ.16.ூᫀ௃|ூ᪆௃᝞«¶·08,•.•¹º048C'º(»Ḅ²3,Z,BOC=45°,0B=2,½M3¾ly¿•,0C:y¿²À¿ḄᜳÂ(15஺480஺=45°+15°=60°,•,0BD=30°,.-.OD=-OB=1,2BD=yJOB2-BD2=V3,•••M8Ḅᙶ᪗((6,1),•••MBᙠÆᱥÈy=ax2(a>0)Ḅ«i.•••a(V3)2=1,a=ᦑᫀ(¶·OB,᪷²3ḄÉÂÈ;ᑖÊÉÂÈ14BOC=45஺½M8¾BOly¿£),ᯠÌB_NB0D=60%᪷ÍÂÎÂ30஺ÂᡠÉḄͺϺḄÀ1஺஺=?஺8,ÑᑭᵨÒÓÔᳮᑡB_Õ^ᑮM3Ḅᙶ᪗Ñ?MBḄᙶ᪗ᐭÆᱥÈ᪆Bᓽ1.⚪'FGÖᦪ×ᔠ⚪Øb⌕ᑭᵨd²3ḄឋÙÍÂÎÂ30°ÂᡠÉḄͺϺḄÀḄឋÙÒÓÔᳮḄHᵨFGÖᦪ«i.MḄᙶ᪗ᱯÛÜݲ3ឋÙÞB_OB:x¿ḄᜳÂ(30஺ᯠÌB_M8Ḅᙶ᪗'⚪Ḅᐵ.17.ூᫀ௃:(1)341ᓄ((3x—஺+1)2=0,(3%—1+%+1)(3%—1—x—1)—0,•4x=0ᡈ2%—2=0,%1=0,%=12

9(2)va=2,b=1,c=—I•b2—4ac=1—4x2x(-j)=5-1±V5-1±V5•x=-------=--------;2X24ூ᪆௃(1)ᐜß⚗ᯠÌᵨ;3á§]B.(2)⚪âãᵨÍ·ä3ã<åᑖã]Bå`1ὃ⇋ᵨB᪷§ᩭ].⚪ὃDdᐗFG34Ḅã.ᐗFG34çᵨḄ3ãᨵÍ·ä;3ãè3ã§ãåᑖã⌕᪷34ḄᱯMᮣê⌱ᵨᔠ〉Ḅ3ã.18.ூᫀ௃(1).%28%+6=0,:.%2—8%=-6,••/-8%+16=-6+16,ᓽ(x-4)2=10,—4=+V10,•í1=4+V10,x=4-V102(2)V(%-1)2=3X-3,/.(%-l)2-3(%-1)=0,ᑣ(X—1)(%—4)=0,x-1=0ᡈX-4=0,%1=1x=4.2ூ᪆௃(1)çᦪ⚗ßᑮ34Ḅïº>ºðñ.G⚗9ᦪÀḄ;3èᡂòᐰ;3ÌÑä3ᓽ1I(2)ᐜß⚗Ñᑭᵨó§åã34Ḅôºåᑖõ^_>ᐵxḄᐗG34Ñ]öBᓽ1.⚪b⌕ὃDᐗFG34ᐗFG34çᵨḄ3ãᨵÍ·ä;3ãஹåᑖãஹ§ãøè3ã⚪Ḅᐵ'᪷34ḄᱯM⌱ùúûḄ3ã.19.ூᫀ௃(1).ᐵíḄᐗFG34/2(1)%+ñ2=()ᨵᦪ᪷.•4=[-2(m-I)]2-4m2=4-8m>0,m<(2),,ᐵxḄᐗFG34--2(m-1)%4-m2=0Ḅ>᪷ᑖ(%1ஹ:.:+ü=2m—2,-%=7n2,2vᧁ+=8-•(%1+%)2—2þ1•%2=8-3XX,BP5m2—8m—4=0,212

10m=-m2=2()1••,ᦪ"Ḅ-|.ூ᪆௃(1)᪷ᨵᦪ᪷ᔠ᪷Ḅᑨ!ᓽ#$%ᐵ'mḄ)ᐗ)+,-!.ᓽ#$%/0(2)ᑭᵨ᪷34ᦪḄᐵ4#$%51+%2=2m-2,x=m2,ᔠ8+=8-3ᑐ1ᱥᓽ#$2%ᐵ'ᑭḄ)ᐗ=+.ᓽ#$%>Ḅ.?⚪ὃBC᪷34ᦪḄᐵ4DE᪷Ḅᑨ!FGHIJ)ᐗ=+ᨵᦪ᪷K᪷Ḅᑨ!0M⚪ḄᐵN.20.ூOᫀ௃Q(1)RSᙳ)UVWCxU᪷⚪Y$x+1+(%+l)x=169,$QX]=12,x=—14().2OQSᙳ)UVW12U.(2)abcdVWefghiḄUᦪQ169+12x169=2197(U)OQabcdVWefghiḄUᦪ2197U.ூ᪆௃(1)RSᙳ)UVWCxU᪷ᨵ)UfChiabkdVWeᐳᨵ169UfChiᑡn.(2)᪷(1)oᡠnᦪqr⊤t%abcdVWefghiḄUᦪ.?⚪ὃBC)ᐗ=+Ḅuᵨvw-xᐵ4yzᑡ%)ᐗ=+M⚪ḄᐵN.21.ூOᫀ௃Q(1)R3ᜋᚖ}Ḅ)~xᑣSḄ)~ᑣ(33-2x+2)᪷⚪Y$Qx(33-2x+2)=150,$Q%!=10,2=,ᔠ⚪Y)=15100(2)R3ᜋSḄ)~xᑣᚖ}Ḅ)~33(-2),᪷⚪Y$Qx=200,᦮ᳮ$Qx2-35x+400=0ᦪ᪷=,☢200.

11ூ᪆௃(1)ᐜRḄm7,$%Ḅ᪷☢!ᑡ%n%XḄᓽ#YX⌕ᔠ⚪Y0(2)ᐜRḄᑗ?$%Ḅ᪷☢!ᑡ%ᑨ%¡Ḅᓽ#$%Oᫀ0⚪ὃBC)ᐗ=+Ḅuᵨ¢£⚪¤ḄY¥᪷⚪¤¦%Ḅᩩ¨v%ᔠ〉Ḅ-xᐵ4ᑡ%M⚪ḄᐵNYḄª.22.ூOᫀ௃(20+2x)(4஺)ூ᪆௃Q(1)⚪Y$Q®¨¯°±²xᐗK®ᜩ#├µ20+4'0=(20+2%)¨®¨·ᑭ120-x-80=(40-x)ᐗ.ᦑOᫀQ(20+2x)0(40-x).(2)⚪Y$Q(20+2%)(40-x)=1200,᦮ᳮ$Qx2-30%+200=0,$Q%i=10>x=20.2OQ®¨¯°±²10ᐗᡈ20ᐗKSᙳ®ᜩ#¼ᑭ1200ᐗ.(3),#½ᑮSᙳ®ᜩ·ᑭ2000ᐗᳮᵫ᝞ÁQ⚪Y$:(20+2x)(40-%)=2000,᦮ᳮ$Qx2-30x+600=0,•••4=(-30)2-4X600=-1500<0,.••ᦪ᪷ᓽ,#½ᑮSᙳ®ᜩ·ᑭ2000ᐗ.(1)ᑭᵨÄ├µx=20+4xÅÆ-⎀Èᓽ#ᵨÉxḄÊᦪ!⊤t%Ä├µxᑭᵨᑭË=µ²-q²ᓽ#ᵨÉxḄÊᦪ!⊤t%®¨Ḅ├µᑭË0(2)ᑭᵨÌᑭË=®¨Ḅ├µᑭËxÄ├µx,ᓽ#$%ᐵ'xḄ)ᐗ=+,.ᓽ#$%/;(3),#½ᑮSᙳ®ᜩ·ᑭ2000ᐗᑭᵨÌᑭË=®¨Ḅ├µᑭËXÄ├µxᓽ#$%ᐵ'xḄ)ᐗ=+ᵫ᪷Ḅᑨ!4=-1500<0,#$%ᦪ᪷ᓽ,#½ᑮSᙳ®ᜩ·ᑭ2000ᐗ.?⚪ὃBC)ᐗ=+ḄuᵨஹᑡÊᦪ!DE᪷Ḅᑨ!⚪ḄᐵNMQ(1)᪷ᔜᦪx.ÐḄᐵ4ᵨÉxḄÊᦪ!⊤t%®ᜩḄ├µxE®¨Ḅ├µᑭË0(2)vw-xᐵ4yzᑡ%)ᐗ=+0(3)ᱞÒ“JA<0Kᦪ᪷”.23.ூOᫀ௃Q(1)RxÖ×e#ØPQḄ4ecm,ᵫ⚪Y$:(6-x)2+(2x)2=(4Ý2,

12$Qx=2ᡈx=|,OQPஹ஺ÞK%ß2ᡈ|Ö×e#ØPQḄ4àᔖ0(2),âᙠ.ᳮᵫQRyÖKAPCQḄ☢-'¡ABCḄ☢Ḅ)äᵫ⚪Y$Q|(6-y)-2y=ixix6x8,᦮ᳮ$y2-6y+12=0,v21=36-4x12<0,=ᓽQ,âᙠ.ூ᪆௃(1)RxÖ×e#ØPQḄ4&cm,ᑣAP=xcm,PC=(6—x)cm,QC=2xcm,᪷åæçᳮn%xḄᓽ#0(2)ᎷRâᙠ᪷⚪Yᑡ%)ᐗ=+᪷ḄéêᑨMᔲâᙠ.?⚪ὃBC)ᐗ=+Ḅuᵨ⚪ḄᐵNMvw-xᐵ4yzᑡ%)ᐗ=+.24.ூOᫀ௃Q(1)ì(zn,3)Êᐭy=2x-1$2î)1=3,$m=2,ì(2,3)Êᐭy=2%2+n$24+n=3,$n=-5(2)ïᱥðḄ᪆!y=2——5,ñḄ⚔óᙶ᪗(0,-5),ö÷øyø0(3)J*<0K=+úᦪy=2/)5oyûxḄüᜧrþ0(4)ᨵ.ÿ

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4ᦪஹ=Q/+bx+C(QW0)Ḅᐹᨵ᝞`ឋ6?aa>0b/ᱥy=Q%2+b%+c(a஺0)Ḅcᔣev-fbygXḄhᜧjkl,bygXḄhᜧjhᜧ,%=/b)'oᨬl+qᑶᓽ⚔T/ᱥḄᨬt.ঝaQ<0b/ᱥy=ax2+Z?X+C(Qw0)Ḅcᔣ`x

13bygxḄhᜧjkl,[=-/byoᨬᜧ+vᓲᓽ⚔T/ᱥḄᨬx.