defence exam Coast Guard Navik GD (General Duty) 02/2025 Mock Test Series Mathematics Quadratic Equations Common Roots

यदि y2 + py + 9 = 0 and y2 + qy - 9 = 0 के मूल उभयनिष्ठ हैं तो p2 - q2 किसके समतुल्य है?

1
30
2
24
3
36
4
63
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