ĐỀ CƯƠNG ÔN TẬP TOÁN 8 - HỌC KỲ II – NĂM HỌC 2009 - 2010
ĐỀ
Bài 1:
!"#$%&'(
)
*
*
+
−
<+
+ xx
Bài 2:,-(.''/012
3
2
4
0526$789':6$;012
3
<012
4
(.'
'/01=7,>(.''/$?01@
Bài 3 :
AB$C'34A'D3E0FC'B'/D'37,$GH%7
ABI'J!'D'C'K>'1'0*'$L
)'$L+'$7,>#>'<>''/
I'J!MD0
Bài 4
AB34AE34NNAE'DD'E34=D'E4A
3E*'$O34+'$O4A)'$7
NAP$$C'E34MQR1$C'A4E7N,>MI'/E4OEA7
'N,>#>''/34AEO9#>''/$C'34E=+'$
7
ĐỀ 2
Bài 1:
!#$%&'(S+
≤
5
Bài 2,-(.''/012
3
2
4
0526$789':6$;012
3
<012
4
(.'
'/01=7,>(.''/$?01@
Bài 3AB34AE34NNAE'DET4E
B
U
A3E*'$O34+'$O4A)'$7
AP$$C'E34MQR1$C'A4E7
,>MI'/E4OEA7
' ,>#>''/34AEO9#>''/$C'34E=+'$
7
ĐỀ 3
Bài 1:'C'SV
SW)
'
+
+
−
x
x
)
*
−
−
=
− x
x
x
++ =−x
Bài 2AB
+
*
*
xx −
<
−
% 4 !#$'/%&'(
Bài 3 XI;M6MRYMZM$3M9MZM$41!('+K$NMD<:G[Y4
M931!(K$N7AM0\[$);*]7,>'[<M;@
Bài 4:AB0^&MPMC:0$C'_'DMI'RD'_0*'$)'$7,>'
0^&0V'$
7,$'['B'/0^&@
Bài 5: AB$C'34A_R3OM;'B3`7
,$3E@4934V'$3A2'$
AP$
ABC∆
DBF∆
'AP$Ea7bAa373b7
ĐỀ 4
Bài 1 :N)S N
WSW) 'N
x
x
x
x
* −
+
+
+
=
2
Bài 2: #$%&'(*W5Sc+S)
Bài 2d]'5;7XI'__eY3M94'C'*VK$Q:0!P'<:[%30]';
*]7,>!(''/'_K_e749=!('1'':0VK$N7
Bài 3AB'J!'D342'$L4AV'$7fHM;'B3`'/$C'3E4
NAP$$C'3`4MQR$C'4AE
NAP$3E
E`7E4 'N,>MIMBRgE`O3`
ĐỀ 5
Bài 1.'C'S
V
+ −x
)
* x−
xx
xx
x
−
=−
−
+
3
4
E
A
) +
*
Bài 2:XI;M6MRY3M941!('K$N7hM[Y4M9378;MDM
1!('0K$NO%;[[;M0+]7,>MI<
M;34
Bài 3 !"#$%&'(
)
*
*
+
−
<+
+ xx
Bài 4 7AB$C'34A_R3734+'$O3A'$7fH3NN4A4:_D'14A
R4O3'i4:RE7
AP$j34A∼jE34,>4AOE3OE47'34'iAERk7,>#>'j4kA
ĐỀ 6
Bài 1 : 'C'S+5
−
=−
−
+
xxxx
x
#$0%&'()2
≥
**S
Bài 2 : XI;M6$C:Y3M941!('*K$N7l94;MD0$#'B$I;Q
<:[31!(')K$N749;-'I9+;*]7,><mM;34
Bài 3:AB'J!34AE'D342'$O4AV'$7fHM;'B3`'/$C'3E47
AP$$C'3`4MQR$C'4AE
AP$3E
E`7E4
',>MIMBRgE`O3`7
ĐỀ 7
Bài 1/N
S+N+5n*'N
*
+
*
=
−
+
−
−
−
x
x
x
x
Bài 2/ !#$%&'(*S)cS*7
Bài 3/XI'__eY93M994$);O"'eY94M993$+7
,>KB'C'J9O9!('e1'0K$N7
Bài 4/AB$C'34A'FR3X0M$'/4A7d:'C'M$EOb6BPoI''C'
'R34O3AB'BD'EXb=D'47
NAP$
∆
4EXMQR1
∆
AXb
NAP$4E7AbK_M-7
'NAP$EX0FC''/D'4Eb7
ĐỀ 8
Câu 1 :XI'J!'DMI$I'R=+'$MIM;'pB=*'$7,>#
>''/'J!MD7
Câu 2 :N'C'
N*SS*S
7N
( )( )
)
+−
+=
+
+
− xxx
x
x
x
NAD+<:GQ$0BR0BRkCMQ$I<:O0BRkkC+MQ$I
<:7q([$+<:G0VMQ7`r'D$:<:G$?0BR@
Câu 3 :NWSSs7N,$MFP'
x+
−
K_F$
7
Câu 4 :AB34A_R3'D34n'$L4A+'$7d:XI'4AB'BAX)'$OH
X_D'14A'i3AR87
NAP$AX8MQR1A34O:AX734X87A37
N,>X87'N,>t(#>''/AX8#>'A347
AF+AB'DPC'M['DMI'R'/PC'MC:=)'$MIM;'B=V
'$7,>>''DM[MD7
ĐỀ 9
Câu 1:lZu!'$IvO'B>&$I!'$Iv7
ABB'DMIM;'pB0
V'$
2'$7,$#>'q'['B'/
BMD@
Câu 2 !#$%&'(s+
+
*
=
−
−
+ xx
*,$9
>
−x
Câu 3 :XI0^&MP'D'['BV'$OMC:0
$C'_'D'RD'_0w0"0*'$)'$
6cm
3cm
4cm
B'
A'
C'
A
B
C
,$#>'<'/0^&7
,$>''/0^&7
AF)AB$C'34A_3'D34V'$L3A2'$7,%$Ix$yg;3AK_
'PM$4H3BB14A7,YAHAE
⊥
3RE
AP$$C'3EAA34MQR7
,>EA7*4E'i3ARk7,>#>'$C'4kA7
ĐỀ 10
Bài 1 'C' S*
−'
)
+
+ =
+ −
−
Bài 2 'C' #$%&'(
S*Ws+WW)
( )
*
+
>
+
−
+
Bài 3:XIR.'M.'YM9;1!(')K$N7qKMM"'
*
<m
M;R:Mm^!('0%+K$N7,><mM;YM9;'/R.'MDO9
=;R:MYM9;02]
Bài 4 :AB$C'34A_R3O'D34*'$O3A+'$OM;FC'3E7l;_D'
1EA'i3AGb7AP$=$C'34A$C'EbAMQR7
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,>MI3E7,>#>'$C'34A#>'PC'34Eb
Bài 4 :XI0^&MP'DMC:0$C'_H7
lI'RD'_'/MC:0+'$O'$O'['B'/0^&0
2'$7,>#>'<>''/0^&MD
ĐỀ 11
Bài 1:'C'
NW*2 NW'N
=
+
−
+
−
Bài 2:NW)Ss7`m: !#$%&'(
NAB3
2
+
−
−
7,$CZ'/M37
Bài 3:XIMBMY3M941!(')+K$N7d]'[MBMDM1!('*+K$NO%
;[[;M0]7,><mM;347
Bài 4:AB$C'34AO'DTn
O4E0:97EX0FC''/D'3E4OE80FC'
'/D'4EAX
∈
34O8
∈
4A7
N,>X393EVO4EOX4+7
NAP$X8NN3A7 'N,t(#>''/$C'34A#>'PC'3X8A7
ĐỀ 12
Bài 1 : 'C'a)S++b)
*
=
+
+
−
−
x
x
x
x
Bài 2 : !"#$%&'(
5*
V
5 −
≥
− xx
Bài 3: `zw34'D'0>789':Yz3<z420>(0"wG
z=7,>(0"wG$?z0]'Mw7
Bài 4: AB
ABC∆
_R3OHM;'B3`'/
ABC∆
a)
AP$
ABH∆
MQR1
CBA∆
b) ,>MI4AO3`O4`74934+'$O3A'$
c) .bOa0M$M(P'/`<343A7,>#>'PC'baA4
2'$
'$
+'$
A{
A
4{
4
3{
3
ĐỀ 13
Bài 1'C'N*WS+NW
*
WV'N
*
=
+
+
−
−
x
x
x
x
Bài 2 :N !"#$%&'(*W5Sc+S)
NAP$=
S)S*c1$.
Bài 3,-'/'QC'0n<:789':Y'QP'QP<:
(C'G'QPHM_'QP7,$(C'G$?'Q0]'Mw7
Bài 4:XII'J!'D'[0'$O'[I02'$O'['B0+'$7,>>'
I'J!MD7
Bài 5 :AB
∆
34A'D34'$O3A+'$O4AV'$7,%'R340:M$XB'B3X*'$7
,YXK|M;gBB14A'i3AR8O'i:93kRh7
N,>MIX8 NAP$h0M$'/X8
'N,%X80:M$}B'BX}2'$78(}k'i3AR~7AN$
QIC∆
MQR1
AMN
∆
ĐỀ 14
Bài1:'C'N
*
x −
S
)
x +
N
*
=
+
+
−
−
x
x
x
x
Bài 2 !"#$%&'(
+
x +
*
x −
s
Bài 3:XI6__MY3M949*789!('^%$K$NM941$*7
,><mM;34!('Mw'/6@
Bài 4 :AB34AE'DT
U
E
n•7`M;'pB3A4E_D'1Rk7
AP$
N€34E jE3Aq:3E
347EA
N.b0'9'/4(EA•0M$'/4E7AP$M$3O•Obg
7
'N,>t(#>'$C'3k4EkA7@
ĐỀ 15
Bài 1:'C' !#$%!(NW*‚N
V
+
<− x
Bài 2:,$B'BCZP'+rCZP'*
Bài 3:N
++x
* N)S2
Bài 4:d]'5;CO$I'9''__eY93M994O'C'*VK$OQ:0!P'<:
G[M9930]';*]7,>!(''/'_K_eO9=!('1'':0
VK$N7
Bài 5:AB'F34AE'D34NNAE34sAEOM;'pB4E_D'1'R%4A7fH
l;'B4`7
NAP$
∆
4EA
∆
`4A
NAB4A+LEA+7,>`AO`E
'N,>#>'34AE
Bài 6:XII'J!'DK>'1'*'$O)'$OV'$7,>#>'Bw'/I'J
!7
ĐỀ SỐ 16
Bài I :'C'
1)W*)SV 2)
*
) 2
x x
x
+ −
− + =
3)WS* 4)
V *
x x x
x x x x
− =
− + + −
Bài II'C'#!#$'/$?%$I&'(
1)W*c*W 2)
n 2
* )
x x x+ + +
≤ −
Bài III 1)
) * x x− = −
2)ABc7`m:BC
a)*W+*W+ b))S5)S5
Bài IVBC='C'0!
`zMow,zP'D0>wOzP'Dn0>w7qK0:GzP
$I0"w0w0"w0:GzP0"w'e0RBzP
M_0"w'e0RBzP7`rMm0:B%0>wG$?z@
Bài VABj34A_R3'D34V'$L3A2'$7l;'B3`FC'4E'iRk
`∈4AE∈3A
1),>MI3E@EA@ 2)AN$j34Aj`43:34
4`74A
3)AN$j34kjA4E 4)AN$
IH AD
IA DC
=
Bài VIABI'J!34AE73ƒ4ƒAƒEƒ'D'[I+'$O'[n'$'['B
2'$7,#>'<q
<
O#>'Bwq
>'f'/I:@
ĐỀ SỐ 17
Bài I :'C'
1)*WW*V 2)
* )
x x
x
− +
− − =
3)W
nS
4)
) )
x x
x x
− +
+ =
− +
Bài II'C'#!#$'/$?%$I&'(
1)+W≤VS 2)
) +
V *
x x x− + −
− ≥
Bài IIIAB$s7`m:BC
1)+$S+S 2)*$*
3)
* +x x+ = −
Bài IVBC='C'0!
XI;MY3M941!(')K$NQM9Y4M9A1!('*K$N7,><mM;
344AO9=<mM;34<mM;4A0VK$!(''/;MD
%'<mM;3A05K$N@
Bài VABj34A'FR3'D343AV'$L4A)'$7AC'M;FC'4EAb'iRk
b∈34E∈3A
1),>MI3E@bE@ 2)AN$j3E4j3bA
3)AN$kb7AEkE74b 4)ABq
34A
V'$
7,>q
3bE
@
Bài VIABI'J!34AE73ƒ4ƒAƒEƒ'D'[I34V'$OM;'pB3A'$
'['B33ƒ'$7,#>'<q
<
O#>'Bwq
>'f'/
I:@
ĐỀ SỐ 18
Bài I :'C'
1)W2*WS) 2)
V )
x x
x
+ −
− − =
3)WSS* 4)
nV *
+
V ) )
x x
x x x
− −
+ = +
− + −
Bài IIAB'C' a)W
S
≥
W*W+
b)*SWcW*S)
1)$?% !#$'/']%'z$I&'(@
2),$''C'CZ:%'/B$mMQ;'Mm'B@
Bài III
+ )x x− = +
Bài IVBC='C'0!
XI(o%'D'J(1-'C''J('/D=)7899%$'J(BJ'J
('/DM"'($101(Mm'B++MZ7,$(Mw@
Bài VABj34A'D34V'$L3A'$4A'$7fHM;FC'3E'/D'43AO%
M('/E30:M$kB'B3Ak4E3
1),>MIE4@EA@ 2)AN$j3AkjAEk3)AN$3E
3473AE47EA
Bài VIAB0^&MPMC:0$C'_'D'RD'_0w0"=*'$)'$O
'['B'/0^&MP=V'$7,>'f'/0^&MP:@
ĐỀ SỐ 19
Bài I'C'
1)
n2)
2
V
*
*
)
+ −
+
−
=
−
−
+ xxxx
3)
*
)
*
x
x
xx
−
+
=
+
+
−
4)
* V + x x− = +
Bài II
1)
*
*
+
) −
<
+
+
+ xxx
!#$'/D%&'(
2) !#$''/'%$I&'(
*
−
>
−
+
xx
x
*
+
)*
*
−≥
−
+ x
xx
3)AB'C')S+≤++*s27`m:$
''C'CZ:%'/B$mMQ;'%@
Bài IIIBC='C'0!
,'/(=V789*0w('$(Z'M$Ix(PM"'
=(PM"'7,$(0]'Mw@
Bài IVAB∆34A'FR3'D343A+'$O4AV'$7}FC'D'4'i3ARXOFC'D'
A'i34R8
1)AP$X8NN4A 2)AN$j38Aj3X4
3),>MI3X@X8@ 4),>q
3X8
@
Bài VAB0^&MPMC:0$C'M['D'R='$O'['B'/0^&MP
=V'$7,>'f'/0^&MP:@
ĐỀ SỐ 20
Bài I'C'
1)W*)S5 2)
*
V *
x x
x
− −
+ − =
3)
+
x x
x
+ −
− =
4) WV
S
Bài IIAB*≤++*s57`m:
1) 'C'Mm'B !#$'/$?4%$I&'(
2) ,$'C'CZ:%'/B$mMQ;'%@
Bài IIIBC='C'0!
`GPM"M0$K9BR'r^$.'nWB;CMIO`012N
2NIM"'-'I5r0B'C'0BR789':)r0BY012N012N
KMD(r0B'/012N't=)N+(r0B'/012N7`r$?010]'MwMmI
M"'B%r0B'C'0BR@
Bài IVAB34AE'D3E'$L342'$7,YAHAb⊥34RbOAa⊥3E
RaH4`⊥3AR`78(b1E'i4ARkO94k5'$Lbk2O+'$
,>MI4b@bE@ AP$j34`j3Abj4`AjAa3
*AP$#P'3A
3473bS3E73a
Bài VABI'J!'D'[I'RMC:='$O'['RMC:=2'$'[
'B'/I='$7,>>''/I@,>#>'<'/I@