Question 420299: |x+3|<5 i got (2,8) 2 was correct 8 was not what did i do wrong? what is other value?
Answer by lwsshak3(11628) (Show Source):
You can put this solution on YOUR website! x+3|<5 i got (2,8) 2 was correct 8 was not what did i do wrong? what is other value?
..
Whenever you have a variable in the absolute expression, you must solve for two possibilites:
When the expression could be =>0
When the expression could be <0
In this case the expression is (x+3)
..
x+3<5
x<2
..
-x-3<5
-x<8
multiply by (-1) and reverse inequality sign
x>-8
..
solution:
(-8,2)
|
|
|