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anonymous

  • one year ago

Rewrite the expression without absolute value bars. | 21 |

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  1. jim_thompson5910
    • one year ago
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    how far is 21 from zero?

  2. anonymous
    • one year ago
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    x = |21| is same x = -21 or x = 21

  3. jim_thompson5910
    • one year ago
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    ginochen you're thinking of |x| = 21

  4. anonymous
    • one year ago
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    ah, sorry, I'm take a mistake @jim_thompson5910 it's right

  5. anonymous
    • one year ago
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    21 thats exactly what I thought! thanks for clarifying!

  6. jim_thompson5910
    • one year ago
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    yep 21 is 21 units away from 0 so |21| = 21

  7. jim_thompson5910
    • one year ago
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    -21 is 21 units from 0 which is why |-21| = 21

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