SOLUTION: 3<=|x-2|<=5
my answer which is marked wrong was [5,7]
should it be {5,6,7} (-infinity,7] n [5,infinity) ?
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-> SOLUTION: 3<=|x-2|<=5
my answer which is marked wrong was [5,7]
should it be {5,6,7} (-infinity,7] n [5,infinity) ?
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Question 200352: 3<=|x-2|<=5
my answer which is marked wrong was [5,7]
should it be {5,6,7} (-infinity,7] n [5,infinity) ? Found 2 solutions by rfer, edjones:Answer by rfer(16322) (Show Source):
You can put this solution on YOUR website! 3<=|x-2|
.
3<=x-2
5<=x
.
-3>=x-2
-1>=x
.
|x-2|<=5
.
x-2<=5
x<=7
.
x-2>=-5
x>=-3
.
So:
-3<=x<=-1, 5<=x<=7
or
[-3, -1], [5, 7]
.
Ed
(