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| Q. |
Quadratic eqn ax 2+ bx + c = 0 has equal roots if |
| A. | b - 4ac < 0 |
| B. | b - 4ac > 0 |
| C. | b - 4ac = 0 |
| D. | b - 4ac = 1 |
| Answer» C. b - 4ac = 0 | |
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