Solution by the quadratic formulaPractice Questions & MCQs
Practice Solution by the quadratic formula 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.
Solution by the quadratic formulaQuiz - Solve & Score
Q1. The expression b^2 - 4ac in the formula is the (NCERT):
- A.coefficient
- B.root
- C.discriminant
- D.determinant
Answer: C. discriminant
Q2. If D = 0, the formula gives roots (NCERT):
- A.both equal to -b/2a
- B.-b and 2a
- C.no real roots
- D.two distinct values
Answer: A. both equal to -b/2a
Q3. If b^2 < 4ac, the formula yields (NCERT):
- A.no real roots
- B.equal real roots
- C.rational roots
- D.two real roots
Answer: A. no real roots
Given 2, 4, asked for the unknown. By hence the required answer = no real roots. set up the relation specified by the stem (formula / theorem from the relevant Class-10 chapter) and substitute the listed numerical data. Consequently option A) no real roots. Others fail: option B) 'equal real roots' doesn't hold - That is D = 0; option C) 'rational roots' doesn't hold - No real roots when D < 0.
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