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  9. Q13

SBI Junior Associate 2023 · Question 13 of 188

The root values of the quadratic equation are 1/5 and 2/3. Which of the following equations is correct according to the given information?

quadratic-equations

  1. AA. 15x^2 - 8x + 1 = 0
  2. BB. 15x^2 - 11x + 2 = 0
  3. CC. 15x^2 - 14x + 3 = 0
  4. DD. 15x^2 - 16x + 1 = 0
  5. EE. 15x^2 - 13x + 2 = 0Correct

Answer: E. E. 15x^2 - 13x + 2 = 0

Explanation

15x^2 - 3x - 10x + 2 = 0; 3x(5x - 1) - 2(5x - 1) = 0; x = +1/5, +2/3.

Source: SBI Clerk Mains Memory Based Paper 2023 - Quant (Guidely, via bhagyaachievers.com) · memory-based

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