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anonymous

  • 5 years ago

|x - 1| >= 2

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  1. anonymous
    • 5 years ago
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    x-1>= 2 or -(x-1)>=2

  2. anonymous
    • 5 years ago
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    x>=3 or -x+1>=2

  3. anonymous
    • 5 years ago
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    x>=3 or x<= -1

  4. anonymous
    • 5 years ago
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    thanks ankur504 i got the same ans as you, but i'm confused because in the solutions it says (-infinity , -1] U [3 , +infinity) ???????

  5. anonymous
    • 5 years ago
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    Same thing.

  6. anonymous
    • 5 years ago
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    lokisan where does - infinity and all that come from?

  7. anonymous
    • 5 years ago
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    ankur said x<=-1, so that means ALL x less than or equal to -1...

  8. anonymous
    • 5 years ago
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    x>=3 means real numbers greater than 3 to infinity

  9. anonymous
    • 5 years ago
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    Check out a number line...

  10. anonymous
    • 5 years ago
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    The points -1 and 3 will partition it into three intervals: \[(-\infty,-1]\]\[(-1,3)\]\[[3,\infty)\]The set of all x that satisfy your inequality is then\[(-\infty, 1] \cup [3,\infty)\]

  11. anonymous
    • 5 years ago
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    oh i understand now, thanks a bunch!

  12. anonymous
    • 5 years ago
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    np :)

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spraguer (Moderator)
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