Railways PYQCBT 1 2016

RRB NTPC · Question 24

What will you get if you subtract – x^2 – x + 8 from 5x^2 – 6x + 5? A. -6x2 - 5x + 3 B. 4x2 - 7x + 13 C. -6x2 - 7x - 13 D. 6x2 - 5x - 3

  1. B

  2. C

  3. A

  4. D

Show answer & explanation

Answer: (D) D

Explanation

(5x² − 6x + 5) − (−x² − x + 8) = 5x² + x² − 6x + x + 5 − 8 = 6x² − 5x − 3.