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RBI Assistant 2017 · Question 156 of 200

Direction: In the following questions two equations numbered I and II are given. You have to solve both the equations. Give answer if; . c o I. 12x² + 47x + 40 = 0 II. 30y² - 13y - 3 = 0

Quadratic Equations

  1. Ax < yCorrect
  2. Bx > y
  3. Cx=y or no relationship cannot be established between x and y
  4. Dx≥y
  5. Ex≤y

Answer: A. x < y

Explanation

I. 12x² + 47x + 40 = 0 12x² + 15x + 32x + 40 = 0 3x (4x + 5) + 8 (4x + 5) = 0 (3x + 8) (4x + 5) = 0 ∴ x = -8/3, -5/4 II. 30y² - 13y - 3 = 0 30y² + 5y - 18y - 3 = 0 ix 5y (6y + 1) – 3 (6y + 1) = 0 (5y – 3) (6y + 1) = 0 ∴ y = 3/5 ,-1/6 w . Hence, x y ww

Source: RBI Assistant 2017 Mains Previous Year Paper (ixamBee solved PDF) · memory-based

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