Đề kiểm tra Học kì 1 môn Toán lớp 9 số 3

ĐỀ KIỂM TRA HỌC KÌ I
NĂM HỌC 2010-2011
MÔN: ĐẠI SỐ 9
Thời gian làm bài: 90 phút
ĐỀ
BI 1
  !"
# $ 
%# $ 
− =


+ =

& 
( )
&
&#  − =
'()*
 
 
−
+
Bi 2:&
+,-"$.&#/
012345-"0
016785-"9:6345;,,<=>?
$.&#/<-@A,-!;,- 0
Bi 3:&
+,BC+<7!B;BC.DB+.E0FG>,BH0
 '*C+BHHCH+0

 '*458I.CJ,+0
Bi 4:&
+,BC+<7!B0'KLM?8B>C+<2C#<7;
<=C+0NOP-5C+QORG>?<7;<=BC@C#ST0
 +8C+P-6$65>UTVTB0
 +8"TBOCWK >U0
 H6/
ĐÁP ÁN KIỂM TRA HỌC KÌ I
NĂM HỌC 2010-2011
MÔN: ĐẠI SỐ 9
Thời gian làm bài: 45 phút
Bi N#i dung
Bi 1:

1) ';
# $  %# &$ &X
%# $  %# $ 
− = − =
 
⇔
 
+ = + =
 


Y$ Y
# $ 
= −

⇔


− =


# &
$ 
=

⇔

= −

19$;P-Z.[&V\]
2)
( )
&
&#  
− =

&#  
⇔ − =

&#  
&#  
− =

⇔

− = −



# &
# 
=

⇔

=

19$;#.&<-#.
 ';
( ) ( )
( )
&
&
   
 
 
 
− −
−
⇔
+
−


 &  
 
− +
⇔

−

% & 
& 
&
−
⇔ ⇔ −
Bi 2
&
1)
0
# X 
$.&#/ \ \
0H-"9:;^!$.#J_X0
'`,a-;X.&0J
b.c.\&
+78-"dP-$.&#\&
Bi 3
& a) '`,a-;
C+
&
.BC
&
JB+
&

C+
&
.D
&

JE
&
.XX
b.cC+.X
eBC0B+.C+0BH
\% \& & %
\%
\&
&
%
x
y
$.&#\
O
b.cBH.
BC0B+
C+
b.cBH.
D0E
X
.%E
eBC
&
.C+0CH
D
&
.X0CH
b.cCH.
D
X

.D
eH+.C+/CH
H+.X/D.D%
b)I.CJ,+
I.
E E
X X
+
I.D
Bi 4:
&
H<2f0
a) OP-55C+5
∆BC+<7!BK
OB.OC.O+
\Z$OK(5BC
\TOQO<-<7;<=BC
KTOP-(5BC
Z$TB.TC
\19$CK>UTVTB
\';C+⊥TC!CK>
UTVTB
gKC+P-6$65>U
TVTB0
b) ';
·
X
TCO hX=
∆TCO.∆TBO
.c

·
·
X
TCO TBO hX= =
Z$TBOCWK 
>U>R*TO0
0