ĐỀ CƯƠNG TOÁN 8 HK2

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
A/ LÝ THUYẾT:
 !"#!$%&'( )*+, *'( )-'( ).
/0%-%123%4  !"5$$*,&'( )*+, $6789#!:*&'( )*+, 8; <*.
=>:*&'( )*+, 8; <*:*? @<A )%4.
BC%)%D%&'( )*+, E$? FG2H*$&D%IJ-%12),.
KL<*&'( )*+, 8; <*:*? @MN ) '* !"."OPMQ
RS*8%T2U2A*V2AT O-T8% -W%8<*&'( )*+, 
XS*8%T2U2A*V Y -T8% -W%8<*&'( )*+, 
S*8%T2HOZ, H)%)%D*%*O!3*#2; 5$[\ #P$#]*\ #P$#]*-D"4U2D5$
-\ #P$#]*
^S*8%T2-\ #PO1[P <*-'_ )&Y )%S*+" )*$)%S'_ )*` )a" )a" )O0%:*
N 5$*$)%SO!V*$%N b #N%L$*+'_ )c&-d )MN )5$$%*$)%S+'_ )c&
-d )MN )-e8%4*5$$%*$)%SO2f )
B/ TRẮC NGHIỆM:
Câu 1: ;& )%45$&'( )*+, 6

69#![
$g9{hi} 8 g9{-hi} g9{hi} M g9{h}
Câu 2: %123%4 6S-\ 5$&'( )*+, 
B
=





−
−
=
−

−
+
x
x
xx
#![
$6jO!6j 86jO!6ji6jO!6ji MD$H8H 12a$%
Câu 3:k5$&'( )*+, 
  =
 
x x
x x
− +
=
+ +
#![
$
x
≠ −
8
x
≠

x
≠
H
x
≠ −
M
x

≠
H
x
≠
Câu 4: )%45$&'( )*+, 
  x + =
#![
$69869i69H69M69H69i
Câu 5:)%45$8<*&'( )*+, 67=l6#![
$6liB86lB6miBM6mB
Câu 6:"$l8H8<*-` )*E !"-I ).
$
 
a b
<
8i=$li=8
 
 
a b+ > +
Mi=$7li=87

Câu 7[",  Y2a$%[
$noL 8
∆
pno 
∆
pL

po no
p L

=
M
pn L
pL no
=
Câu 8[", gq-"6*+" ), #![
$^ 8^HK  MHK

5
4
8
x
E
D
C
B
A
, 
Câu 9[", OZ Y2-I )[
$
pL Ln
p L
=
8
Ln p
pL n
=

nL pL
n p

=
M
pn p
Ln n
=
Câu 10[gq-"-:M!%6*+" ), #![
$=HK 8B BH MKHR
C
D
B
A
3
2,5
4,8
x
, 
i+$ )i
Câu 11[", OZ=$%*$)%SO2f )-d )MN ) !"
O%*-I )*E*rS-s [
$
∆
pL 
∆
p
8
∆
pL 
∆
p


∆
pL 
∆
p
M
∆
pL 
∆
p
Câu 12 : , OZ=@8$" %t2e&*$)%S-d )MN )[
$= 8B K MR

hình 3
H
C
B
A
Câu 13[", OZB Y2a$%[
$nopL 8
n no
L pL
=

n o
L p
=
M
∆
no9
∆

Lp
Câu 14[", OZBgq-"-:M!%A*+" ), #![
$R 8RH X MXH

b)
3,5
4
5
y
E
D
C
B
A
a) a // BC
a
10
5
x
3
E
D
C
B
A
, B
C/ BÀI TẬP:
Bài 1:%D%&'( )*+, [
$u6v


u67v

9Bu6=v8X679R=HX6H=9KH^
M
 = = 
HK 
= 
x x
x
+ +
+ = −
w
K  = B X

R  =
x x x− − +
+ = −
x
( ) ( )
  = 
   
x
x x x x
−
− =
+ − + −
Bài 2:%D%8<*&'( )*+, O!8%T2M%y *;& )%4*+t *+Qaq[
$6X
≤
8=67^lB67

≥
MK76m
Bài 3:>:* )'_%-%6wSA*z*s p- *s LO0%O; *qMr-\ #!B3g$23%-%-'c)%_
O0%O; *q<AH )'_%-@ )sK&I*O!*%&*Q-%T- L3\&*_%)%$ -{-\ H )'_%-@&D%
* )O; *q*tK3P U2{ )-'_ )*z*s p- *s L
Bài 4:>:*$ f62f%Mb )*z8 p- 8 L<*KO! )'cMb )*z8 LO18 p<*RP 
3"D )S)%|$$%8 pO!LH8%*+} )O; *q5$Mb ) '0#!3
Bài 5:W )$%aq8} )gq !A)<&8$aq3%$,$%aq-@
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ĐỀ CƯƠNG TOÁN 8 HK2

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