Respostas
(2x+8)(3x-6) < 0
5-x
2x + 8 =0 => 2x = -8 => x = - 4
3x-6=0 => 3x = 6 => x= 2
5 - x = 0 => -x = - 5(-1) => x = 5
-4 2 5
- + + +
- - + +
+ + + -
+ - + -
RESP. { x pertence R / ]-4 ; 2[ e x > 5 }
e fui
(2x+8)(3x-6) < 0
5-x
2x + 8 =0 => 2x = -8 => x = - 4
3x-6=0 => 3x = 6 => x= 2
5 - x = 0 => -x = - 5(-1) => x = 5
-4 2 5
- + + +
- - + +
+ + + -
+ - + -
RESP. { x pertence R / ]-4 ; 2[ e x > 5 }
e fui