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10 questions from this quiz
The non-negative value
∣x∣|x|∣x∣
−x-x−x
x=4x = 4x=4 or x=−4x = -4x=−4
Two cases
x=4x = 4x=4
x=4x = 4x=4 and x=−1x = -1x=−1
x=−4x = -4x=−4
It contradicts x≥1x \geq 1x≥1
Split into cases based on sign changes
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