Question 1073578
It's easier to graph it. 
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*[illustration L11.JPG].
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Or at the very least, solve for,
{{{sqrt(x+1)-2=0}}}
{{{sqrt(x+1)=2}}
{{{x+1=4}}}
{{{x=3}}}
Then you know the dividing line between positive and negative values.
Then you can divide the regions that are less than zero and those that are greater than zero.