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  9. Q563

RRB Group D (Level-1 posts) 2022 · Question 563 of 598

Select the quadratic equation which has one root 1 + 3. ​

  1. Ax2 - 2x - 2 = 0Correct
  2. Bx2 + 2x + 2 = 0
  3. Cx2 + 3x + 1 = 0 ​
  4. Dx2 + 2x + 1 = 0

Answer: A. x2 - 2x - 2 = 0

Explanation

Solving the options, x2 - 2x - 2 = 0 yields 1 + 3 as one of its roots. ​

Source: RRB Group D 2022 Prev. Yr. Paper (22 Aug 2022) (Shift 1) - FreshersNow · reliable-secondary

← Q562View full paper (598 questions)Q564 →

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