MOJUTMNT
  • MOJUTMNT
What is the solution set of |2x + 4| < 10?
Mathematics
jamiebookeater
  • jamiebookeater
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anonymous
  • anonymous
|dw:1360210275097:dw| Does this help?
MOJUTMNT
  • MOJUTMNT
Then I try to solve the two? Yeah I got it. Thanks meng.
anonymous
  • anonymous
@Grazes dont u think the inequility will flip in the 2nd one???

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mathstudent55
  • mathstudent55
|2x + 4| < 10 -10 < 2x + 4 < 10
anonymous
  • anonymous
whoops?
anonymous
  • anonymous
|dw:1360210702537:dw|
mathstudent55
  • mathstudent55
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.
anonymous
  • anonymous
@mathstudent55 best answer
mathstudent55
  • mathstudent55
anonymous
  • anonymous
u r welcome :P

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