Solve for x, |2x| = -4 _____?
- {-2}
- (0)
- {}
- None of these
Explanation
To solve |2x| = -4:
Since the absolute value is always non-negative, there is no solution for:
|2x| = -4
The absolute value of any number cannot be negative.
The correct answer is:
{} (empty set, indicating no solution)
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