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10 questions from this quiz
Non-negative value
−x-x−x
x=4x = 4x=4 and x=−4x = -4x=−4
Different cases
x=4x = 4x=4 and x=−1x = -1x=−1
2x−3=52x - 3 = 52x−3=5
Two solutions
x=−4x = -4x=−4
It contradicts x≥1x \geq 1x≥1
Reject it
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