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Inequalities and Ranges

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by Jim@StratusPrep » Thu Jan 26, 2012 5:29 pm
First, try to spot the easy stuff. Since the expression can equal 0, X can equal 0 leaving only A and E for potential answers. Then just test if X can be negative to differentiate the two. As it can't be negative, E is the answer.
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by pemdas » Thu Jan 26, 2012 5:51 pm
knight247 wrote:No OA
I would start by marking criticals: 3,4,7
Then left,right, or pointed the criticals we would have satisfied the sign (=<) of inequality, hence A,C and D are out as we are fixed at 3,4,5 exactly. We consider B and E. Yes, obviously E is the answer as x is equal or different from 0 here (important to see in advance this condition to satisfy the inequality).

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