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RRB NTPC 2025 · Question 375 of 409

If alpha and beta are the roots of the equation x^2 - 6x - 5 = 0, then find the equation having the roots 3alpha and 3beta.

  1. Ax^2-18x-48=0
  2. Bx^2-18x-45=0Correct
  3. Cx^2-15x+48=0
  4. Dx^2-15x+45=0

Answer: B. x^2-18x-45=0

Official answer key verified. Detailed explanation coming soon.

Source: RRB NTPC Graduate CBT-1 response sheet 18-Jun-2025 Shift-2 (candidate-shared copy of official answer-key viewing) · official-answer-key

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