hard · Gre Quant
A real number x satisfies |2x - 7| < 5. Which of the following expressions must be positive for EVERY x in this range? Indicate ALL such expressions.
- X - 1
- 6 - x
- X^2 - 7x + 6
- X^2 - 5x + 6
- 2x - 1
- X^2 + 1
- 10 - x^2
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