MOJUTMNT
What is the solution set of |2x + 4| < 10?
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Grazes
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|dw:1360210275097:dw|
Does this help?
MOJUTMNT
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Then I try to solve the two? Yeah I got it. Thanks meng.
ZakaullahUET
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@Grazes dont u think the inequility will flip in the 2nd one???
mathstudent55
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|2x + 4| < 10
-10 < 2x + 4 < 10
Grazes
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whoops?
ZakaullahUET
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|dw:1360210702537:dw|
mathstudent55
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Solve
-10 < 2x + 4 < 10
like you would solve a regular inequality. Whatever you do to the middle part to get x by itself, do also to the left side and right side.
First, subtract 4 from all three parts:
-14 < 2x < 6
Now divide all parts by 2
-7 < x < 3
The above inequality means that x is greater than -7 and less than 3.
ZakaullahUET
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@mathstudent55 best answer
mathstudent55
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@ZakaullahUET Thanks
ZakaullahUET
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u r welcome :P