#### 12, 14
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- \(x^2 + 2x - 168 = 0\).
- Solving the quadratic equation: \(x = 12\) or \(x = -14\).
- The numbers are 12 and 14.
- If a train travels 180 miles in 3 hours, how far will it travel in 7 hours at the same speed?
- Speed = 180 miles / 3 hours = 60 miles per hour.
- Distance in 7 hours = 60 miles/hour * 7 hours = 420 miles.
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