Identify the solution set for the inequality .
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Official Explanation
Identify the solution set for the inequality .
We analyze the compound inequality by splitting it into two parts:
We consider two cases based on the definition of absolute value:
Case 1:
Here, , so the inequality becomes:
But since and cannot both be true, there are no solutions in this case.
Case 2:
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What it tests
Your ability to solve absolute-value equations and inequalities by considering both cases.
Common trap
Dropping the absolute value bars entirely or missing that |x| = k has two solutions when k > 0.