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BITSAT Mathematics Quadratic Equation 2023 BITSAT 2023 (Memory Based Paper 1)

BITSAT Mathematics Question (2023) — Solution

Question

If one root of the equation x^2+p x+12=0 is 4, while the equation x^2+p x+q=0. has equal roots, then the value of ' q ' is

Options

  1. A. 4
  2. B. 12
  3. C. 3
  4. D. 49 4

Answer

D. 49 4

Step-by-step solution

4 is a root of x^2+p x+12=0 16+4 p+12=0 p=-7 Now, the equation x^2+p x+q=0 has equal roots. p^2-4 q=0 q= p^2 4 = 49 4

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