Here are the solutions to the problems:
1. Solve 2x−6x+2≥0
To solve this inequality, we first find the critical points where the numerator or denominator is zero.
- Numerator: x+2=0⟹x=−2
- Denominator: 2x−6=0⟹2x=6⟹x=3
These critical points divide the number line into three intervals: (−∞,−2), (−2,3), and (3,∞). We test a value from each interval:
- Interval (−∞,−2): Let x=−3.
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