Nature of roots (discriminant)Practice Questions & MCQs
Practice Nature of roots (discriminant) questions from Quadratic Equations (Class 10 Maths) - important MCQs with answers and step-by-step solutions. Solve the sample questions below, then practice the full set free on the RankByte app.
Nature of roots (discriminant)Quiz - Solve & Score
Q1. For what positive value of k does 1x^2 + kx + 1 = 0 have two equal roots?
- A.2
- B.4
- C.1
- D.3
Answer: A. 2
Q2. For what positive value of k does 1x^2 + kx + 16 = 0 have two equal roots?
- A.16
- B.8
- C.64
- D.32
Answer: B. 8
Q3. For what positive value of k does 4x^2 + kx + 1 = 0 have two equal roots?
- A.16
- B.4
- C.8
- D.5
Answer: B. 4
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