人教版数学七年级上册全册同步练习【全册合集】

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10
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13

14.#/ᨵᳮᦪ1.3ᨵᳮᦪḄ011.3.1ᨵᳮᦪḄ0.12!ᨵᳮᦪḄ0345131.[--)+[--]=______________________+[--]=஺.6623.89ெ1ேெ-21ே+(-31)=________ெ2ே-15+0=_______ெ3ேெ-ே+ெ+ே=ெ4ேெ-3ே+0.3=.4.(-5)+=-8+ெ+4ே=-95.Ꮇ=a,b>%?@ᦪcஹd>%᎔ᦪ34ெa+bே+cd=6.BCᔜEF9GHIJ%KḄᨵெேெ+[ே+ெ#2ேே+ெ+ேL30ே+0,(-1.25)+[-0[557634A.1LB.2LC.3LD.4L7.Ꮇ=MᦪḄN%Kᦪ34MLᦪ#OெேA.Mᦪ(PB.Mᦪ(KC.Mᦪ#P#KD.MᦪQ#L%08.MLᨵᳮᦪ?0᝞HNST#L0ᦪ34ெேA.ML0ᦪ(%KᦪB.ML0ᦪ(%PᦪC.ML0ᦪQᨵ#LKᦪ#LPᦪD.ML0ᦪQᨵ#L%U9.ᨵᳮᦪa,bᙠᦪVWXYZ᝞C[34a+bḄ%ெேA.ᜧS0B,S0C.]S0D.ᜧSa10.89\212প[-4-]+[+3-)ফெ-8§ே+ெ+4.5ே3O257ব[-7-]+[-3-]ভI|+|-9—|36(5)[+4.85ே+(-3.25ேெ6ே(-3.1)+(6.9)96[-3.125ே+ெ+30ே5(-22-10+O

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16
ᨵᳮᦪ1.3ᨵᳮᦪḄ1.3.1ᨵᳮᦪḄ2ᨵᳮᦪḄᵨ1.78209ᦪ089,91,94,88,93,91,89,87,92,86,90,92,88,90,91,86,89,92,95,88,;<=>Ḅ@A()A.1789B.1799C.1879D,18012ஹপ(C3)+(—2;ফ(C1.2)+1+15[4](3-1)+(-2y)3ஹপ.[-2.4)+(-3.7]+ெ+4.2ே+0,7+[-4.2ே131,1ஹ18ফ.GHெI419125ব•ߟே+ெ:ே+ெMே236ভ.Lே+3-+2.75+(-6-]42

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19.#/ᨵᳮᦪ1.3ᨵᳮᦪḄ011.3.2ᨵᳮᦪḄ1.12!ᨵᳮᦪḄ1341•ᨵᳮᦪḄ134l\1¦#Lᦪ]S0WLᦪḄᵨ§⊤©ᡂ0________________________________2.BC«JᑁX¬4ᦪv(1)(-2)-(-5)=(-2)+()(2)0-(-4)=0+()(3)(-6)-3=(-6)+()(4)(+37)=1+().3.k®3C஺_7C°¯k®#8஺°______.4.²³-200m300m¯²³250mCs´ij100m,Cso.5.ᦪVW⊤©ᦪ-3Ḅµ⊤©ᦪ-7ḄḄ¶·%.526___________________________________.?1¦1Ḅ¸Ḅ?@ᦪ]S--3Ḅ?@ᦪ%_________.o57.-|-3|-[-3]-5-7Ḅᦪl0-38.BCG¹QPºḄ⌱⚗lெேA.MLᨵᳮᦪḄN#OᜧSᐸQ&¾#L0ᦪB.U0W#Lᦪ¿LᦪC.MLᨵᳮᦪḄ¸#OSÀ1ᦪD.U1¦#Lᦪ¿Lᦪ8.BCÁQ┯ÃḄ⌱⚗lெேA.1¦#LKᦪ]S0WLᦪḄ?@ᦪB.MLKᦪ?1¸¿lKᦪC.Kᦪ1¦Pᦪ¸%KᦪD.Pᦪ1¦Kᦪ¸%Pᦪ9.BCÁQPºḄ⌱⚗lெேA.1¦#Lᦪ]S0WLᦪB.ML?@ᦪ?10C.MLᦪ?1¸#OSÀ1ᦪD.MLᦪ?1¸Ä#OSÀ1ᦪ10.BCÁPºḄ⌱⚗lெேA.?]ḄMᦪ¸%UB.U1¦#LᦪLᦪḄ?@ᦪC.MLᨵᳮᦪ?ÅÆlÇḄ?1D.U1¦#Lᦪ¿Lᦪ11,¸l-7.2,À1ᦪl0.8,1ᦪlெேA.-8B.8C.6.4D.-6.412.Ꮇ=a>0,È!ுÊ,34஺#6l()A.PᦪB,PᦪᡈKᦪC.KᦪD.013.89\(1)(-5)-(-3)(2)0-(-7)(3)(+25)-(-13)(4)(-11)-(+5)(5)21(6)(-1.7)-(-2.5)g)'Z-6gு(-L8).

20

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231.4ᨵᳮᦪḄ◀1.4.1ᨵᳮᦪḄ1ᨵᳮᦪḄ1ஹ(1)5xெ-4ே$(2)(-6)x4=[3][-7]xಔே=মjx(_g)=ভெ-5ேx0=য(—ߟ)x(--)=9263(71(-3)x($)=o2ஹ:(1)-7Ḅ᎔ᦪ+Ḅ,-ᦪ+Ḅ./02(2)21Ḅ᎔ᦪ-2.5Ḅ᎔ᦪ(3)᎔ᦪ12+34Ḅᨵᳮᦪ஺3ஹெ20215ᔡ᪍ேᎷ9:=5,6=—2,ab>0,a+8=஺4ஹᨵᳮᦪ<ᐸ,-ᦪḄ>ெேAஹ?@ABCDBஹ?@ABCECஹBFᜧ2HDஹBFI2H5ஹJKL┯NḄ⌱⚗ெேAஹQRᨵᳮᦪSᨵ᎔ᦪBஹTC᎔ᦪḄUᦪḄ>C1CஹTC᎔ᦪḄUᦪ:@Dஹ1VTTCE᎔ᦪ6ஹெ20215ᡂSேYZ2x(-)Ḅ[\ெே2Aஹ-1Bஹ1Cஹ-2Dஹ2]ὃ_ᫀ2]1ஹ-20-24,7,0--,-,!o᪷bᨵᳮᦪḄcdeZ஺1522ஹெ1ே-y,7,7ெ2ேfghᑖᦪᓄᡂᎷᑖᦪஹIᦪᓄᡂᑖᦪklm᎔ᦪ஺ব±1.3ஹf=5,n=—2,ab>0a=-5a+b=-74ஹC.0<+Ḅ,-ᦪḄ>0,pHᨵᳮᦪEᦪ5ஹA.0rᨵ᎔ᦪ஺6ஹA

241.4ᨵᳮᦪḄ◀1.4.1ᨵᳮᦪḄ2ᨵᳮᦪḄeZsteᵨ1ஹUᨵᳮᦪ3b,᝞\ab<0,wa+b<0,ெேAஹa>0,b>0Bஹa<0,b>0Cஹa,bx@Dஹa,bx@wEᦪḄ./0yᜧ2ஹYZ:59272প(—2)x—x(——)x(——);ফ(-6)x5x(—ߟ)x—410367CQQ1বெ-4ேx7xெ-1ேxெ-0.25ேfெ4ே(|)}~x(|)x3ஹYZ74প49—x(-5)ফ(-8)x(-7.2)x(-2.5)x—;(3)-7.8x(-8.1)x0x|-19.6|(4)-|-0.25|x(-5)x4x(-^)o4ஹ|x+2|+|y-3|=0m+Ḅ0஺5ஹᎷ9a,bTC,-ᦪc,dTC᎔ᦪmḄ./01,m(஺+cd-2009Ḅ0஺

25]ὃ_ᫀ1ஹD.ab<0,La,bx@fa+b<0,LEᦪḄ./0yᜧr-cஹ5,9ஹ2ஹ592ஹ32ஹপ(-2)x—x(——-)x(——)=-(2x—x—x—)=410341032ফ(-6)x5x(--)x—=6x5x—X—=106767(-4)x7xெ-1]xெ-0.25ே=-(4x7x1x-^)=-7f(3)(-A)AভXX2415241143ஹெ1ே49—x(-5)=(50——)x(-5)=50x(-5)——x(-5)=-249-2525255(-8)x(-7.2)x(-2.5)XA"^X(XA)_ফ=(8X=6012522ব-7.8x(-8.1)x0x|-19.6|=0f1ெ4ே-|-0.25|x(5)x4x(—g)=-0.25x(-5)x4x(-^)=-54,-.-|x+2|+|y-3|=0,|x+^>0,|y-3|>0x——2,y=3-2^-|y+4Ay=-|x(-2)-|x3+4x(-2)x3=5-5-24=-245ஹ•a,bTC,-ᦪc,dTC᎔ᦪmḄ./01••a+b=0,cd=l,m=±l•m=l(a+Z?)cd—2009/஻=-2021m=-1(஺+b)cd-2009m=2021.

261.4.2ᨵᳮᦪḄ◀1ᨵᳮᦪḄ◀1ஹ/᦮ᦪ2,3,-6,10ெᦪᵨேcd◀eZᐸeZ[\1224,eZJஹஹ.xM2ஹெ20215ேᎷ9ᦪ஻?=+Ḅᨬᜧ0஺,.la-11ஹ3ஹa<0,w஺Y1,■Ḅ0ெேTAஹ121BஹI2HCஹ121Dஹᜧ2H4ஹ|3—y|+|x+y=O,mḄ0.\a\bId5ஹᎷ9QW0,஻W0,CW0,m¥+F+UḄ¦§0஺a\b\c6ஹெ20215¨©ேYZ22-5x1+p2|7ஹYZ0প-8—(—15)+(—9)—(—12);ফ(ߟ1)—7—(—3.2)+(—1);2111921(3)--------(—)—ভ(ߟ11—)—(-7—)—12—(-4.2).3642353213118ஹYZ:(1)(-3)4-[(--)4-(--)];ফ(--)x(-3—)4-(-1-)4-3;ব(—2—)x(---)4-(----)+(—5)ভ(—56)x(ߟ1—)+(—1)x-210916479ஹYZெ1ே6+6+(-2);ফ«3Qஹ«4Q-60+P—12Q;

271111ெ3ே-1+54-(--)x(-6)ভ()+132410i஺ஹhi0প4-2ফ*+11ஹhi0rஹ/I22ஹ/5ஹkஹ1l.1ஹ1ஹপ(-----+—)+(----)[2]----i-[---(---)---].6734210573512ஹhi:1313J1ஹ3..1.প“noᓝ%C/241«5)ফ»]ὃ_ᫀ1ஹ2x3x[10+(-6)13x[10-(-6)R2;-6x(2x3-10).2s-.xy^O,.u=±1,v=±1,.஻2=w+x=C2,0,2.mḄᨬᜧ{|2.3ஹB,ka<0,}Y1,k.CIYQYO¬.OY-QYII஺—1—ci--.1-67=1+(-a)A0-a-1y0--------<0|q-1-a-\4^•.|3-^+|x+y|=0,|3-y|>0,|x+>|>03-y=O,x+y=0,k•y-3,x=-3.=2Ṻ3

285ஹawO,bwO,cwO¥±"1.=±1a¯c.••@+1+°=-3,1,1,3.a\b\c6ஹ5.7ஹপ-8-(-15)+(-9)-(-12)-8+15-9+12=10;AA[2](-1)-7-(-3.2)+(-l)=---7+3.2-l=-6;,ஹ21,1ஹ1211113ব------(---)--=-----H-----=----f364236421222121(4)(-11-)-(-7-)-12——(-4.2)=-11-—12-4-7.4+4.2=-12.4.2τ22248ஹপ(-3).[(--)H--)]=(-3)^(-x4)=-3x-=-y;ফব(—2—)X(----)-r(——)+(—5)21095342144ভ(-56)x(-1—)+(ߟ1—)x—=-56x(—)x(——)x—=-24164716779ஹপ-6+6-C-2)=-6-3=-9;ফ(-3)x(-4)-60-(-12)=12-(-5)=17;ব-1+5+(-‘)x(-6)-1+5x(—6)x(-6)=179;6rஹ/I1ஹJ1,1ஹ4s4[4ே(----)+1—+—=(——)x—xlO=——.3241065310ஹᑖ᪆ெ2ே⚪´2᧕┯⚪¶C◀rᨵᑖ·sᨵ¸ᨵᑖ·s¹º»»¶F¼½⚪¹┯NᙢeᵨeZ¿s஺1111解--+1\J一・151220ஹ,ஹ23஽ஹÁ4-5-3Z•(z-----------1----)x60=—x60=2361060606060111z(--+1\•1_1l)x60=-x60--x60+-x4-5-37.+60453453ெÂᯠÄ$eᵨÅᑖ·skYZÆÇÈᓫ஺ே,…Ë1,111ஹ1111111ெ2ேÌ᧖Ä---(-------1—)=-----------1----—=—6045360460560330

29ெÎ┯Ḅ϶ᙠ2◀rᨵᑖ·sѹF¦eᵨḄே1,151220ஹ123DÓÄ+(--------1---)5606060606023DÓÄ$:11',■(Z4_?+x60=-x60--x60+-x60=234531,᪷b᎔ᦪḄBÒᨵ23.1220rপ(6-7+512242=(------1—)x(----)6735142242242ஹz=—x(---)X(----)+—x(----);657535235111291ফ-10573105105291313ফপÔÕÖ+%/24]«5)(1--9-4+18)x(-l)2452924341ফX—X—=——1133

301.4ᨵᳮᦪḄ)◀$1.4.2ᨵᳮᦪḄ◀$2ᨵᳮᦪḄ"ஹ#ஹ)ஹ◀%ᔠ'(1YZ1/5+512ெேA.1B.25C.l/25D.1/52ஹJKÆÙḄÄxDᦪḄᨵெேপ4x=-8(2)-4x=12(3)-4x=-36(4)-l/5x=0.A.1B.2C.3D.43ஹpHḄᨵᳮᦪV+Ḅ,-ᦪÚ>ெேA.?@ACDB.?@ACEC.BFI2HD.BFᜧ2H4ஹa<5|a-5|+(5-a)=ெே(5⚪ேA.4—2aB.0/C.1D.—1.5ஹÛÜᦪ0ÝᣚᎷ9ßᐭḄxC-3,ßÎḄ[\CெேAஹ11Bஹ-11Cஹ-30Dஹ306ஹáᦪx-5yḄ0100,áᦪ2x-10y+5Ḅ0ெேAஹ100Bஹ200Cஹ2005DஹF¦ÓB7ஹaஹbஹcSpDᦪwIx—a|+Iy—bI+Iz—c|=0,ெxyzே,Ḅ0ெேAஹEᦪBஹpEᦪCஹDᦪDஹpDᦪ8ஹâãäᑡåæçᢈéêÇëḄìíîïðᐹ+Ḅòóôõᚁ¦÷¦ὑù1úû.+üýḄþᙳὑᙳὑḄᑖᙳὑḄ65ḄᙳὑᙳὑḄ()Aஹ1/65Bஹ1/13Cஹ5/13Dஹ13/59ஹḄ⌱⚗ெேA.22x23=26B.22+2=1C.ெ2ே3+1/2=-16.284-24=22D10ஹ&'-5+(+(=ெே525A.—1B.lC.—25D.—62511ஹᎷ,a<0,|4aெ2aே|Ḅ./஺12ஹaஹb012ᦪ,cஹd0᎔ᦪ,xḄ6789:1,ெa+bேx3+xcdx=13ஹ&2005x2004-20052=„14ஹ;ᦪn<=1,>᡽ᜧ3AᨬCḄ./15ஹ'aஹbஹcᙠᦪEFG᝞I,0JK_______0o2416ஹᵨNOPQ&'9925x(-5)=_____.ab17ஹRS☢ᑡᦪVWF〉YḄᦪ'y1,-3,9,-27,,•ெZ100ᦪே18ஹRS9['

31Ix2=l/3xlx2x31X2+2X3=1/3X2X3X41x2+2x3+3x4=173x3x4x51X2+2X3+3X4+4X5=1/3X4X5X6,……᪷]F^_`abc'1X2+2X3+3X4+……+n(n+l)=(ndᯠᦪ)19ஹ&(+5.9)x(-2004)x[+1996]][-2000)x஺;20ஹ&17-8-(-2)+4x(—5)021ஹh2ijklᏔᦪ1nopḄqḄrs᝞⊤'nᦪḄᦪெ஻ேq12=1x222+4=6=2X332+4+6=12=3x442+4+6+8=20=4x552+4+6+8+10=30=5x6Y஻klᏔᦪ1nvopḄqSw"yᨵ{᪵Ḅᐵ~`ᵨ[⊤ᩭVᵫ&2+4+6+...+202Ḅ8஺22ஹ=᪍⁚i[FᨵᜧḄ⁚⊤⌕ᙠᡂ10ஹ12ஹ15ஹ20vᡂ.ᦟᨬ=⌕ᢧ⌱=ᕒ

321.5.1¡PZ1¢v¡P1ஹWW'(1)(-3£Ḅ¤ᦪᢣᦪ,./¦ெ2ே-(-3Ḅ¤ᦪᢣᦪ,./¦(3)-3,Ḅ¤ᦪ,ᢣᦪ,./஺2ஹWW'প(-2)3=_¦(-)3=_¦(2$3=_;03=(2)(—If";(-l)2n+,=_(-10)2"=_;(-10)2n+l=_3ஹ&'প3X(-2)3-4X(-3)2+8ফ(-l)'°x22+(-2)3H-24ஹ&:(1)32—(-2/;ெ2ே-l4-lx[2-(-3)2]¦ব(—10)2+[(—4)2—(3+32)>2];“1,(-1)4-(1-0.5)X-X[2-(-2)2]¦ম-0.52+--|-22-4|-(-1-)3X-;41129

33য(—2)3-3x[(—4)2+2]-(3)2+(-2);5(—2)2003+(—2)2002.6(-O.25)2011X42010.5ஹ7ª«¬ᦪa,ᔜ[®¯ᡂ°ḄெேAஹa2—(—a)2Bஹ/=(—a)'C|«|=|—tz|Dஹa2>0s6ஹᎷ,X2=9.x±8¦Ꮇ,a3=-8,a±8.7ஹᎷ,a,b012ᦪc.d0᎔ᦪ²a/0,জ+=´+(஻µ8—(*2009=8ஹ,+1|-6Ḅᨬ¶8,v2°"=஺9ஹᨵᳮᦪx,y,z,²,3|+2|y+l|+7(2z+l)2=0,x+y+zḄ12ᦪḄ᎔ᦪ஺¸ὃºᫀ1ஹপ-3,2,9;(2)-3,2-9;(3)3,3-27.2ஹপ—8,——,—ߟ-,0;(2)l,-l,10~n10~/Hl;(3)—1,——,-.827644273ஹ(1)-52ெ2ே04ஹপ-13ফgব92;(4)¾(5)61632(6)-56.5;[7]-22002[8]45ஹB.6ஹx=±3,a=—27ஹ28ஹ—6,—129ஹ3,

341.5.1¡PZ1¢v¡P2ஹWW:(1)(-3£Ḅ¤ᦪᢣᦪ,./¦ெ2ே-(-3Ḅ¤ᦪᢣᦪ,./¦(3)-3,Ḅ¤ᦪ,ᢣᦪ,./஺2ஹWW'প(-2)3=_(-0)3=_;(2)3=_;03=ெ2ே(—1¿=_;(-l)2n+,=_¦(-10)2"=_¦(-10)2n+l=_3ஹ&'প3X(-2)3-4X(-3)2+8ফ(-l)'°x22+(-2)3H-25ஹ&:(1)-32—(—2)2;ெ2ே-l4-lx[2-(-3)2]¦ব(—10)2+[(—4)2—(3+32)>2];“1,(-1)4-(1-0.5)X-X[2-(-2)2]ম-0.52+--|-22-4|-(-1-)3X-;41129

35য(—2)3-3x[(—4)2+2]-(3)2+(-2);5(—2)2003+(—2)2002.6(-O.25)2011X42010.5ஹ7ª«¬ᦪa,ᔜ[®¯ᡂ°ḄெேAஹa2—(—a)2Bஹ/=(—a)'C|«|=|—tz|Dஹa2>0s6ஹᎷ,X2=9.x±8¦Ꮇ,a3=-8,a±8.7ஹᎷ,a,b012ᦪc.d0᎔ᦪ²a/0,জ+=´+(஻µ8—(*2009=8ஹ,+1|-6Ḅᨬ¶8,v2°"=஺9ஹᨵᳮᦪx,y,z,²,3|+2|y+l|+7(2z+l)2=0,x+y+zḄ12ᦪḄ᎔ᦪ஺¸ὃºᫀ1ஹপ-3,2,9;(2)-3,2-9;(3)3,3-27.2ஹপ—8,——,—ߟ-,0;(2)l,-l,10~n10~/Hl;(3)—1,——,-.827644273ஹ(1)-52ெ2ே04ஹপ-13ফgব92;(4)¾(5)61632(6)-56.5;[7]-22002[8]45ஹB.6ஹx=±3,a=—27ஹ28ஹ—6,—129ஹ3,

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483᦮0Ḅ"#2.2᦮0Ḅ"#1ᔠ456⚗1ஹ×Î>4x"y+x2y"=-3/y,4+µ=2ஹ(ÙÚ(ÛÜᑖ¶5x,12x,13x,ÝA(ÙÚḄᕜÜ56ß=2஺஻?7,ᕜÜcm0,1,3ஹᎷᓫ⚗2/ä"/iå⚗æ+஻Ḅ஺4ஹçoᔜ|VḄviå⚗ḄெேA.(—2)3/(—஻éB.-ga%/>ga2c,1,C.x-2/-2D.0.1æ/——fnn25ஹçoᑨëVìíḄAᦪெேজ3//iå⚗;ঝ5'/85iå⚗52xঞ—/>ᜧiå⚗5x2ট/>0.7/y3iå⚗A.2AB.2AC.3AD.4A6ஹçoᔜV//),iå⚗ḄெேA.xy2B.2xyC.-x2yD.3x2y27ஹçoóVìíḄ⌱⚗ெேA.3a+b=3abB.3mn—4nm=lC.7/+5/=12஺"c52242D-õ>öᜩ+>5õ8ஹᎷ-3/"33/2/y”iå⚗i>"ḄெேA.0B.1C.7D.-19ஹ>Aᓫ⚗ø/-ùú&/+/,ÝAᓫ⚗ெேA.2FB.2y2c.-2/D.-2y210ஹjᓫ7/y3ஹ-2x2y\-3x2y\2᮱üḄz஺

4911ஹᔠþçoᔜVḄiå⚗஺প-Q.2a2b—6ab-\Aa2h+4.8ab+a2h121212ফ—X——X——X2462x2y-2xy-4xy2+xy+^^y-3xy24.8,ভ-9+6஺86஺-+7——ab+—a~3312a°be+9abe2—\5a~bc2—abc1+2a2be—a2be212ஹᐜᓄ஺ெ1ே3஺2-5஺+2—6/+6a—3,ᐸ஺=42

50(2)x=T,y=2ᦪ-3x2y+3xy2+x34+3x2y-3xy2Ḅ஺13ஹᎷ!M=2a%,N=3ab\P=7/஺+"#$☢&'()Ḅ⌱⚗,ெேA.M+N=5a3b°B,N+P=-abC.M+P=-2a2bD.N-P=2a2b14ஹᎷ!;/y*.஺/0y,12⚗5a2b2+-ab-la1b2--ab-3a2b2Ḅ஺4615ஹ|஺+1|+(2஻—=0,3ab-15b2+5a2-6஺4+15஺25?Ḅ஺3116ஹ஺=—=:425(2஻+ᶭ-3(3a+2b)-3(2a+bf+Ḅ2(3஻+2஺)

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53C.6x~—6D.6:x?-x-1;8ஹᓄNপ-2:x-3y;+3:2x-y;-4:2x+3y;ফ:4A:2-7X-3;-:-5X2-3X+4;ெ3ே18/%-5n-[20m-.3n-6;]-2.2tn+஻+3;ভ2x-{-3y+[4x-:3x-y;]}9ஹᐜᓄ஺:1;5/_:3,2+5]2;+:^2+7_`ᐸx=-l,y=2,ফ--a2h--a2c-\—a1c--a2b\-\.5abc6|_4:36J3,——abc2ᐸ஺=-2,b=2—,c=3o4

5410ஹᨵᳮᦪcCᙠᦪOIḄPQ᝞$SᓄN\a+c\-\a+b+(]-\b-^+\b+(]cb0a11ஹᎷ!7⚗(2/nr2-x1+3x+l)-(5x2-4y?+3x)Ḅ.xdᐵ-[3/??2+(4/”5)+Ḅ஺

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F+2?+3?=(1+2+3>,13+23+33+43=100,×(1+2+3+4)2=100,ᡠ
I3+23+33+43=(1+2+3+4)2,()13+23+33+43+53=()2=zপÖ+23+33+…+஻3=(Ú=[஻R᦮ᦪ)ফ113+123+133+143+153

114Þὃ~ᫀ1.D2.A.3.D.4.C.5.A.6.D7.B8.D.9.B.10.A.11.5.3x10*712.8,y(஻+D13.--,3.314.±4.15.2ᡈ6.16.±5.17.-2,-1,0,1,2.3318.ᑖᦪl5%,-2.3,3.1415926,5*uᦪl-11,-2.3,6434-9*i,9ᨵᳮᦪl-â"-2.3,%,3.1415926,஺&ä-,2021.-9.19.

1155A2‷,-.5./X(8-1)x(-0)X(1)z0Z1_3=220.m=l321.প0*ফ30*(3)-1*ভ-18-*(5)-11*[6]2.422.ெ1ே9.9ᐗÐফåæ497.5ᐗ.23.x>-1,ᙠᦪ78⊤>Þç}᪆./4_]24.(1)1093.5*ெ2ே-------a-\«(/?+!)25.1+2+3+4+5*225;প1+2+3++n;2ফ11375

116_Jé᦮¶Ḅ»¼ஹ⌱ê⚪1.ᎷDm-n=T,()ெm-nே2m+2nḄRெேAஹ-1Bஹ1Cஹ2Dஹ32.
wxḄ⌱⚗ெ).(A)8x+4=12x(B)4y-4=yெCே4y-3y=y(D)3x-x=33.ᨵᣊìíᙳᒴḄᵯñ&¦⌕Ḅóô.Å4ᐜE¤1móḄᵯñ&ö¤Ḅ÷øRa,ùö¤ᐸúᵯñḄr÷øRb,()+ᣊᵯñḄróôெ]bý,b+a5A.(ab+1)mB.(—-1)mC.ெ+1ேmD.ெ----+1ேmaaa4.
4&Ḅ⌱⚗ெA.ḄûᦪB.ḄûᦪÐ44222?C.3ab2Ḅûᦪ3aD.1X@/ḄûᦪJ5.ெ3ᑖேþx=l&ax+b+1ḄR-2,()(஻+h-1)(1-a-b)ḄḄெேA.-16B.-8C.8D.166.ெ2ᑖேḄ⌱⚗ெேA.3a-2a=aB.2a-3a=6aC.a2a3=a6D.(3a)2=6a27.ெ2ᑖே1ᓫaᐗḄ☢ᒹ3ᓫbᐗḄᧇᡠ◤"ᦪெேA.ெa+bேᐗB.3ெa+bேᐗC.ெ3a+bேᐗD.ெa+3bேᐗ8.$Ḅ⌱⚗ெே.A.4a-a=3B.2(2Q-b)=4a-bC.(஻+b)2=a2+b~D.(a+21஺-2)=—4&ஹ()(⚪9.+⚗,3-2-l—gx2y3-*3ᢥxḄ/0᣸ᑡ10.Ꮇ42x56-3xV89⚗:;m+n=.11.a+2b=3,:;5-a-2b=.12.<ᖪ>᪗aᐗ@ᢥ᪗ᡭ9ᢚCD:;Dᐗ.13.Ex=lF3ax2+bx=4,:;Ex=3Fax2+bxḄ.14.ெ3ᑖேᓫ⚗,7d/ḄHᦪ.15.1--2m-1=0,:;2mJ-4m+3=.16.Ꮇ4a-b=3,ab=2,:;a'b-abJ.

11717.Iᦪ,a2+a+3Ḅ8,:;Iᦪ,2a2+2a-3Ḅ.18.ᵬஹK&L)MNOPQ.ᵬRᙳTUFNOaPQNO2UFVKRᙳTUFNObPQNO3UF.ᵬஹK&LᐳNOPQ_______________.Yஹ⚪19.ெ1ே(-3a)3-(-a)•3a)~ফ(x+2)2-(x-1)(x-2)(3)ᵨ[\]^_202/-4030x2021+202/20.(1)(-a)74-(-a)4x(-a)3(2)a3-(-fe3)2+(-2afe2)3(3)2(/)3)`/+Q4)2.2ii3i21.ᐜᓄ[gh_yx-2[X--/J+ெ-ij+19ேḄᐸlx=-2,y=-122.প@1+32+(-2)3-(-4>x5(2)A=x2-3,B=L%2-3x-l,hA-2BḄ.223.ᐜᓄ[gh.(1)3x-4x2+7-3x+2x?+],ᐸlx=-3.[2]2x-y-(2y2-x2]-5x+y+(x2+2y2),x=-l,y=l.mஹno⚪24pேᐜᓄ[gh@(2a+b)2-(2a—3(2஺+6+(஺+L)(஺)26ᐸl஺=-1,6=2.ফam=3,an=2,hCsa2m3Ḅ225.ᐜᓄ[gh_(x-2y>+ெ2/-14Vy+8xy2ே+(_2x),ᐸlx=-§,y=5.

118ὃᫀ1.D.2.C.3.C.4.D5.A.6.A.7.D.8.D.9.—/—+3t2710.511.212.0.9a13.1214.5.15.5.16.6.17.718.(2a+3b)19.-16/*7X+2*1.20.0a\ঝ~7auஹঞ5aP21.-3x+y1*7.22.ெ1ே-83Vெ2ே6x-l.23.[1]-10*(2)5.24.পv,=஻2+3"Iᐭx-5*Qফam+"=6,a2"-3n=-.825.-10

119yYz)ᐗ)H]{)ஹ⌱|⚪1.)}ᖪ~<ᖪ>ᢥ100%6ᢚsDCD60ᐗ:;ᖪ>ḄெேA.120ᐗB.100ᐗC.72ᐗD.50ᐗ2.)ᩩᙠ)ᩩḄ⌮Ḅ3ᩩᙠ☟lḄ6ḄெேA.3@1B,2@1C,1@1D.5@23.4ᨵxLᐳm᪛᝞TL8:;ᒕ2᪛᝞TL10:;6᪛.᪷¢⚪£ᑡ]{Ḅ⌱⚗QA--2=—+6B.-+2=--6810810m-2m+6m+2m-6CD.------=------8108104᝞a=b,:;¤¥l¦)§ᡂ©Ḅ()AB.a-b=0C.2a=a+bD.a2=abh5]{l,)ᐗ)H]{ḄெேAx+y=1C.—+l=3xD.-+1=32x6ெ3ᑖே)ᐗ)H]{4x+l=0Ḅnெே]_AB-4C.4D.-447x=2ᐵ¬xḄ]{2x-N=1Ḅn,:;mḄA-3B.3C.2D.72x-l8Ꮇ4Iᦪ,4x-56Ḅ®:;xḄெே2A1B1D.29Ꮇ4ᐵ¬xḄ]{mx*2-m+3=0)ᐗ)H]{:;]{Ḅnெ)Ax=0B.x=3C.x=-3D,x=210.Ꮇ4Iᦪ,x+3Ḅ2,:;x®¬ெேAஹ1Bஹ-1Cஹ5Dஹ-5&ஹ()(⚪11.ᙠ]{2x+y=3lᵨ¯xḄIᦪ,⊤±yߟ12.ᙠ]{3x+4y=6l᝞2y=6,:;x=.13.Ꮇ4ᐵ¬xḄ]{2x+a=5Ḅnx=T,:;a=Xni14.x=6ᐵ¬xḄ]{&)k=1Ḅn:;mḄ____________.5315.Ex=F,³5x+263x-4Ḅ®.16.ᑢµ¶·ὁ¹Ḅº»F·ὁ¹¼_“ᡃ¿À;ᜧFÀÂ3Ã*®ÀᑮÅᡃ;ᜧFᡃÆ45ÃÅ.”¶·ὁ¹ÈºÃ.17.4)ᑡᦪÉஹḄஹÊஹ…ஹanlÌ£YÍᦪÎ33,4=2x,஺22=15,

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