CHUYÊN Đ PH NG TRÌNH, H PH NG TRÌNH, B T PH NG TRÌNH Ề ƯƠ Ệ ƯƠ Ấ ƯƠ
LUY N THI Đ I H CỆ Ạ Ọ
BÀI 1. GI I CÁC PH NG TRÌNH SAU:Ả ƯƠ
( ) ( )
( )
( )
( )
2 2
2
2
2
2
2
2
1, 4 2 5 9
2, 2 1 7 2 7
3, 14 6 4 1
4, 2 4 4 1
5,8 1 2 8 31
6,4 3 8 2 1
7, 3 4 1
8, 2 1 1
9,7 3 5 2 3 1
10, 3 3 1 2 2 2
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 x x
+ − + + + =
+ + = + +
+ = +
− + = −
+ − = + −
− + = + +
− + = −
+ + + =
− + + + = +
+ + + = + +
BÀI 2. GI I CÁC PH NG TRÌNH SAU:Ả ƯƠ
( ) ( )
( )
( )
( )
( )
( ) ( )
2
2 2
2
2
2 2
1, 3 2 3 2 15
2,2 5 2 2 7
3,4 1 3 8
4, 2 1 2 1
5, 2 4 3 2
6, 3 3 1 2 1
7,4 4 1 2 1 1 1
8, 2 1 1 4 2
9,5 11 4 4 8 3 1
10,6 2 7 4 3 9
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 x
+ + − + + + =
+ − = +
− + = +
+ − = +
+ + = −
+ + + = +
+ = − + − + +
+ + − − =
+ = − + +
+ + + = +
BÀI 3. GI I CÁC PH NG TRÌNH SAU:Ả ƯƠ
( )
( )
( )
( )
2
2
2
2
2
1, 2 3 3
2, 2 4 2 5 3
3, 3 . 4 4 . 12 12 . 3
4, 5 3 2 5 11
5, 3 4 4 3 1
6,3 3 23 7 11
7,2 7 3 3 2 3 4 5 4 5 6
8, 2 6 5 14
9,11 5 2 98
10, 1 1 4 3
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
x x x
x x x
+ + − + = +
− = + +
− − + − − + − − =
+ + + = +
+ + = +
+ − = + − −
− + − + − = +
+ = + +
+ + + = +
+ + = +
BÀI 4. GI I CÁC PH NG TRÌNH SAU:Ả ƯƠ
( )
( )
( )
( )
( )
( )
( ) ( ) ( ) ( ) ( )
( )
2 2
3
2
2
2 2
2
2 2
2 2 2
1, 2 1 3 1 2 2 5 2 8 5
2,2 1 3 5 4 1 2 19 16 0
3, 2 1 2 2 1 3 2
4, 2 3 1 2
5, 7 8 4 7 4
6, 1 1 10 1
7, 1 2 3 4 2 1
8,3 7 1 1 10
9,2 2 1 5 4 4 5
10, 2 7
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 x x x
x x x x x x
x
− + + = + + − −
− + − + + + − + =
− = + + −
− + =
+ + = +
+ + = − + − + −
− − + − − = − +
+ + + − + =
+ + + − + = − +
−1 3 2 1x x x= − + + + −
BÀI 5. GI I CÁC PH NG TRÌNH SAU:Ả ƯƠ
( ) ( ) ( )
( )
( )
( )
2
2
2
3
2
2
2
1, 2 1 2 2 1 3 2
2, 7 2 5 5 2 7
3, 4 2 2 2
4,2 4 9 2 3 2 10 41
5, 7 56 28 3
6,6 6
7, 11 7 2 11 17
8,7 15 34 4 2 7 6 0
9, 8 17 5 4
10,29 15 2 5 2 7
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
x x x x
+ + + + = +
+ + = + +
− + = +
− + + = − +
− + = −
+ + =
+ + + = + −
+ − + + − =
+ + = + +
+ + = + +