railway RRB NTPC Mock Test Series 2024-25 (CBT 1 + CBT 2) Mathematics Quadratic Equations

यदि x2 + kx + k = 0 के मूल पुनरावृत्त होते हैं, तो k का मान संतुष्ट होता है:

1
k < 0 या k > 4
2
केवल k = 4
3
k = 4 या k = 0
4
0 < k < 4
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