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

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

−

% & 
& 
&
−
⇔ ⇔ −
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
&

.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