Função polinomial do 1o grau exercícios - Resolva as inequações

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APRENDA COM 
PROFESSOR 
TELMO 
�
	16	 Resolva as inequações:
a) x  3(2x  1)  x 1 4 
b) (x  3)2  (x 1 1) (x  2)  2  (4x 1 1)
c) 4(x  1) 1 24(1  x)  3x 1 2(2  x) 
d) 7x
4
  2  x 1 1
4
e) 
2 x x1



1
3
1
9
2
9
( )
S x x 1
6
�
S  {x  V | x  10}
S x x 16
21
�
S  {x  V | x  3}
S  {x  V | x   1}
Resolução:
a x
x x x
x
) )� � � � �
� � � �
� �
� �
� �
�
3 1 4
6 3 4
6 1
1
1
6
(2x x
x
6x
S x � ς
b
x
) )(x (x ) (x ) (4x 1)
x 6x (x2 2
� � � � � � � �
� � � � �
3 1 2 2
9
2
22 4 1
5 11 1 4
10
) 2
x
10
x
S {
� � �
� � � �
� � �
�
x
x
x
� ς
c x x
x x
) )4 1 24 2
4 24 24 3
� � � � � � � � �
� � � �
(x ) (1 ) 3x (2
4x �� �
� � � �
� � �
�
4 2
20 4
21 16
16
21
x
x
x
x
S
20x
� ς{
d x
x x
x
x
) 7x
4
S {
� � �
� � �
�
�
2 1
4
7
4
1
4
2
3
4
9
4
3
� ς
e x x
x
x
) (
) ( )
2 1
3
1
9
2
9
6 1 1
9
2
9
6 1
� �
�
�
�
� � � �
�
� � �
)
(x
6x ��
� �
� �
2
5 5
1
x
x
S { � ς