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|h+3|+|h-3|<6

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 Apr 22, 2021
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If h is a positive number, we have

 

|h+3|+|h-3|=h+3+h-3=2h<6

 

if negative number we have

 

|h+3|+|h-3|=-h-3-h+3=-2h<6

 

$\boxed{|h|<3}$

 Apr 22, 2021

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