eddou55 eddou55
  • 03-10-2020
  • Mathematics
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| |x-4|-2|<3 I need help with this absolute value

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sqdancefan
sqdancefan sqdancefan
  • 03-10-2020

Answer:

  -1 < x < 9

Step-by-step explanation:

Eliminate the outer absolute value symbol.

  -3 < |x -4| -2 < 3

Add 2

  -1 < |x -4| < 5

We know that no absolute value can be negative, so this is fully equivalent to ...

  |x -4| < 5

Eliminate the absolute value symbol.

  -5 < x -4 < 5

Add 4

  -1 < x < 9

___

For the graph, we graph the inequality ...

  ||x -4| -2| -3 < 0

The zero crossings are easy to find in this graphing calculator.

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