Hey Gurpinder,
When you're looking at those inequalities with absolute values, it's usually worth the extra step to be pretty methodical.
If |x+5| > 2 (excuse me for not using the "or equal to"...way too much of a hassle to search for extra symbols!)
Then either
x + 5 > 2
or
x + 5 < -2
So, subtracting 5 in each to isolate x, either:
x > -3
or
x < -7
If you end up with an "or" inequality like you did that seems redundant (x > -7 OR x > -3, which doesn't make sense), check to see if you've either forgotten to switch the direction of the inequality or the sign of a negative/positive shift, as that's probably the culprit...
Last edited by
Brian@VeritasPrep on Wed Sep 01, 2010 1:50 pm, edited 1 time in total.
Brian Galvin
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Chief Academic Officer
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