Tải bản đầy đủ (.doc) (3 trang)

Chuyên đề phuơng trình ĐS.L9(P.H)

Bạn đang xem bản rút gọn của tài liệu. Xem và tải ngay bản đầy đủ của tài liệu tại đây (78.23 KB, 3 trang )


Biªn so¹n: ph¹m hinh.
Chuyªn ®Ò
C¸c d¹ng bµi tËp vÒ ph¬ng tr×nh
Bµi tËp 1:
2
2 3 0
4 6 4
16 17 8 23
2 19 2
1
4 2 1 4
x x
x x x
x x
x
x
x x
− − =
− + = +
+ = −
+ −
=
+ = + +

4 1 3 4 1
3 4 4 2
5 1 3 2 1
1 1 8
11 11 4
x x


x x x
x x x
x x x
x x x x
+ − + =
+ + + =
− − − = −
+ − = − +
+ + + − + =
1 1x x x+ + − =
Bµi tËp 2:
8 2 7 8 2 7 4
3 4 1 8 6 1 1
2 3 2 5 2 2 5 2 2
6 9 6 9 6
3
2 1 2 1
2
x x x x
x x x x
x x x x
x x x x
x
x x x x
+ + + + + − + =
+ − − + + − − =
+ + − + − − − =
+ − + − − =
+
+ − + − − =

Bµi tËp 3:
2
2 2
2 2
2 2
6 3
3 2
1
4 1 3
2 2
2
2 2 2 2
3 3
3 3
x
x x
x x
x
x x x x x x
x x
x x
x x
x
x x x x

= + −
− −
− =
+ + − +
+ −

+ =
+ + − −
+ −
+ =
+ + − −
( ) ( )
( )
2
2
2 1 2 2
1 1
4 1 2 10 1 3 2
x x x
x x x
x x x
− − + = −
+ − − =
+ = + − +
- 1 -

Biªn so¹n: ph¹m hinh.
Bµi tËp 4:
( ) ( ) ( ) ( )
( ) ( ) ( ) ( )
( ) ( ) ( )
( ) ( ) ( ) ( )
( ) ( ) ( ) ( )
2
4 5 7 8 4
1 3 5 7 297

1 2 3 24
4 1 12 1 3 2 4 4
4 5 6 10 12 3
x x x x
x x x x
x x x x
x x x x
x x x x x
+ + + + =
− + − + =
+ + + =
+ − + + =
+ + + + =
Bµi tËp 5:
( )
( )
( ) ( ) ( )
2
2
2 2
2 2
2
2
2
1 2
1
1
1
3 2 3 2 2 3
2 8 6 1 2 2

3 2 1
3 2
1
1 3 2 2 3
2
2
4 4 2 3
2
3
1 3 2 1 8
1
x
x
x
x x x x x x
x x x x
x
x x
x
x
x x x x
x
x
x x
x
x
x x x
x
= −



− + + + = + + + −
+ + + − = +
− − = −


− + − + + − =

+
− + − = −

+
− + + − =

Bµi tËp 6:
4 4 2
4 1; 4 12 9 0x x x x x− = − + − =
( ) ( )
( )
( ) ( )
( )
2 2
2 2
2 2
2
2 2
2 2
3 2
25
15; 11

1 5
9 20 2 3 10
3 1 3 1
8 1 3 1
5 1 2 2
x x
x x
x x
x x x
x x x x
x x x x
x x
+ = + =
+ +
+ + = +
+ + = + +
+ = − +
+ = +
( )
( )
2 2
2 2
4 1 1 2 2 1
2 1 2 1 2 1
x x x x
x x x x x
− + = + +
− + − = − −
36112
2

=+++
xxx
xxx
−++=+
24422169
2
- 2 -

Biªn so¹n: ph¹m hinh.
Bµi tËp 7:
( )
( ) ( )
4 2 4 2
2
2 2
4 3
2 2
2
2
5 4 0 ; 2 2 2 2 0
2 23 2 120 0
4 8 5 0
3 3 9
3 168 46 0
2 2
4
x x x x
x x x x
x x x
x x x

x x
x
− + = − + + =
− − − + =
− + − =
 
+ − −
   
+ − =
 ÷
 ÷  ÷
− +

   
 
( ) ( )
( )
(
)
2 2
2
2 2
2
3 15 2 5 1 2
2 4 3 1 10
17 17 9
5 2 1 7 10 3
x x x x
x x x x
x x x x

x x x x
+ + + + =
− + + − + =
+ − + − =
+ − − + + + =
2
2
2 3
2 3
5 1
5 2 4
2
2
2 1
4 2 2
2
12 4
4 12 47
1 1 1
6
x x
x
x
x x
x
x
x x
x
x
x x x

x
x x
+ = + +
+ = + +
+ + + =
+ + + + + =
Bµi tËp 8:
2 2
3 3
2
3
3
3
3
10 2 2 3 1
3 10 5
1 1 2
5 5
1 2 2 1
24 12 6
2 1 1
x x
x x
x x
x x
x x
x x
x x
− − + =
+ + − =

+ + − =
+ + =
+ = −
+ + − =
− + − =
- 3 -

×