Class 10 · Maths · Quadratic Equations
Nature of roots (discriminant) MCQs
Practice Nature of roots (discriminant) multiple-choice questions from Quadratic Equations (Class 10 Maths) - tap an answer for instant feedback and a step-by-step solution. 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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Get early accessMore topics in Quadratic Equations
Roots, discriminant, nature of roots, word problemsSolution by factorisationSolution by the quadratic formulaStandard form and rootsStandard form of a quadratic equationSum and product of roots
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