Question
Solve : x ² + 10 x + 2 = 0
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| Average Speed of Vehicles (Km//hr) | 60-64 | 64-69 | 69-74 | 75-79 | 79-84 | 84-89 |
| No. of vehicles | 10 | 34 | 55 | 85 | 10 | 6 |