Same topic3 marksDifficulty: Medium
Find the values of k for which the equation x2 + kx + 9 = 0 has equal roots.
Quadratic Equations
1 markDifficulty: Easy
The discriminant of the quadratic equation 3x2 − 4x + 2 = 0 is:
- a−8
- b8
- c40
- d−40
Original Khojo Papers practice question — not from a past board paper.
Answer
−8
No citable source has been recorded for this record. Treat it as practice material, not as fact.
Explanation
The discriminant is b2 − 4ac = (−4)2 − 4(3)(2) = 16 − 24 = −8. As it is negative, the equation has no real roots.
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